perfectALTV - Mathbox for Alexander van der Vekens

	Mathbox for Alexander van der Vekens		< Previous Next > Nearby theorems
Mirrors > Home > MPE Home > Th. List > Mathboxes > perfectALTV		Structured version Visualization version GIF version

Theorem perfectALTV 47717

Description: The Euclid-Euler theorem, or Perfect Number theorem. A positive even integer 𝑁 is a perfect number (that is, its divisor sum is 2𝑁) if and only if it is of the form 2↑(𝑝 − 1) · (2↑𝑝 − 1), where 2↑𝑝 − 1 is prime (a Mersenne prime). (It follows from this that 𝑝 is also prime.) This is Metamath 100 proof #70. (Contributed by Mario Carneiro, 17-May-2016.) (Revised by AV, 1-Jul-2020.) (Proof modification is discouraged.)

**Assertion**
Ref	Expression
perfectALTV	⊢ ((𝑁 ∈ ℕ ∧ 𝑁 ∈ Even ) → ((1 σ 𝑁) = (2 · 𝑁) ↔ ∃𝑝 ∈ ℤ (((2↑𝑝) − 1) ∈ ℙ ∧ 𝑁 = ((2↑(𝑝 − 1)) · ((2↑𝑝) − 1)))))

Distinct variable group: 𝑁,𝑝

**Proof of Theorem perfectALTV**
Step	Hyp	Ref	Expression
1		2dvdseven 47647	. . . . . . . 8 ⊢ (𝑁 ∈ Even → 2 ∥ 𝑁)
2	1	ad2antlr 727	. . . . . . 7 ⊢ (((𝑁 ∈ ℕ ∧ 𝑁 ∈ Even ) ∧ (1 σ 𝑁) = (2 · 𝑁)) → 2 ∥ 𝑁)
3		2prm 16638	. . . . . . . 8 ⊢ 2 ∈ ℙ
4		simpll 766	. . . . . . . 8 ⊢ (((𝑁 ∈ ℕ ∧ 𝑁 ∈ Even ) ∧ (1 σ 𝑁) = (2 · 𝑁)) → 𝑁 ∈ ℕ)
5		pcelnn 16817	. . . . . . . 8 ⊢ ((2 ∈ ℙ ∧ 𝑁 ∈ ℕ) → ((2 pCnt 𝑁) ∈ ℕ ↔ 2 ∥ 𝑁))
6	3, 4, 5	sylancr 587	. . . . . . 7 ⊢ (((𝑁 ∈ ℕ ∧ 𝑁 ∈ Even ) ∧ (1 σ 𝑁) = (2 · 𝑁)) → ((2 pCnt 𝑁) ∈ ℕ ↔ 2 ∥ 𝑁))
7	2, 6	mpbird 257	. . . . . 6 ⊢ (((𝑁 ∈ ℕ ∧ 𝑁 ∈ Even ) ∧ (1 σ 𝑁) = (2 · 𝑁)) → (2 pCnt 𝑁) ∈ ℕ)
8	7	nnzd 12532	. . . . 5 ⊢ (((𝑁 ∈ ℕ ∧ 𝑁 ∈ Even ) ∧ (1 σ 𝑁) = (2 · 𝑁)) → (2 pCnt 𝑁) ∈ ℤ)
9	8	peano2zd 12617	. . . 4 ⊢ (((𝑁 ∈ ℕ ∧ 𝑁 ∈ Even ) ∧ (1 σ 𝑁) = (2 · 𝑁)) → ((2 pCnt 𝑁) + 1) ∈ ℤ)
10		pcdvds 16811	. . . . . . . . 9 ⊢ ((2 ∈ ℙ ∧ 𝑁 ∈ ℕ) → (2↑(2 pCnt 𝑁)) ∥ 𝑁)
11	3, 4, 10	sylancr 587	. . . . . . . 8 ⊢ (((𝑁 ∈ ℕ ∧ 𝑁 ∈ Even ) ∧ (1 σ 𝑁) = (2 · 𝑁)) → (2↑(2 pCnt 𝑁)) ∥ 𝑁)
12		2nn 12235	. . . . . . . . . 10 ⊢ 2 ∈ ℕ
13	7	nnnn0d 12479	. . . . . . . . . 10 ⊢ (((𝑁 ∈ ℕ ∧ 𝑁 ∈ Even ) ∧ (1 σ 𝑁) = (2 · 𝑁)) → (2 pCnt 𝑁) ∈ ℕ₀)
14		nnexpcl 14015	. . . . . . . . . 10 ⊢ ((2 ∈ ℕ ∧ (2 pCnt 𝑁) ∈ ℕ₀) → (2↑(2 pCnt 𝑁)) ∈ ℕ)
15	12, 13, 14	sylancr 587	. . . . . . . . 9 ⊢ (((𝑁 ∈ ℕ ∧ 𝑁 ∈ Even ) ∧ (1 σ 𝑁) = (2 · 𝑁)) → (2↑(2 pCnt 𝑁)) ∈ ℕ)
16		nndivdvds 16207	. . . . . . . . 9 ⊢ ((𝑁 ∈ ℕ ∧ (2↑(2 pCnt 𝑁)) ∈ ℕ) → ((2↑(2 pCnt 𝑁)) ∥ 𝑁 ↔ (𝑁 / (2↑(2 pCnt 𝑁))) ∈ ℕ))
17	4, 15, 16	syl2anc 584	. . . . . . . 8 ⊢ (((𝑁 ∈ ℕ ∧ 𝑁 ∈ Even ) ∧ (1 σ 𝑁) = (2 · 𝑁)) → ((2↑(2 pCnt 𝑁)) ∥ 𝑁 ↔ (𝑁 / (2↑(2 pCnt 𝑁))) ∈ ℕ))
18	11, 17	mpbid 232	. . . . . . 7 ⊢ (((𝑁 ∈ ℕ ∧ 𝑁 ∈ Even ) ∧ (1 σ 𝑁) = (2 · 𝑁)) → (𝑁 / (2↑(2 pCnt 𝑁))) ∈ ℕ)
19	18	nnzd 12532	. . . . . . . 8 ⊢ (((𝑁 ∈ ℕ ∧ 𝑁 ∈ Even ) ∧ (1 σ 𝑁) = (2 · 𝑁)) → (𝑁 / (2↑(2 pCnt 𝑁))) ∈ ℤ)
20		pcndvds2 16815	. . . . . . . . 9 ⊢ ((2 ∈ ℙ ∧ 𝑁 ∈ ℕ) → ¬ 2 ∥ (𝑁 / (2↑(2 pCnt 𝑁))))
21	3, 4, 20	sylancr 587	. . . . . . . 8 ⊢ (((𝑁 ∈ ℕ ∧ 𝑁 ∈ Even ) ∧ (1 σ 𝑁) = (2 · 𝑁)) → ¬ 2 ∥ (𝑁 / (2↑(2 pCnt 𝑁))))
22		isodd3 47646	. . . . . . . 8 ⊢ ((𝑁 / (2↑(2 pCnt 𝑁))) ∈ Odd ↔ ((𝑁 / (2↑(2 pCnt 𝑁))) ∈ ℤ ∧ ¬ 2 ∥ (𝑁 / (2↑(2 pCnt 𝑁)))))
23	19, 21, 22	sylanbrc 583	. . . . . . 7 ⊢ (((𝑁 ∈ ℕ ∧ 𝑁 ∈ Even ) ∧ (1 σ 𝑁) = (2 · 𝑁)) → (𝑁 / (2↑(2 pCnt 𝑁))) ∈ Odd )
24		simpr 484	. . . . . . . 8 ⊢ (((𝑁 ∈ ℕ ∧ 𝑁 ∈ Even ) ∧ (1 σ 𝑁) = (2 · 𝑁)) → (1 σ 𝑁) = (2 · 𝑁))
25		nncn 12170	. . . . . . . . . . 11 ⊢ (𝑁 ∈ ℕ → 𝑁 ∈ ℂ)
26	25	ad2antrr 726	. . . . . . . . . 10 ⊢ (((𝑁 ∈ ℕ ∧ 𝑁 ∈ Even ) ∧ (1 σ 𝑁) = (2 · 𝑁)) → 𝑁 ∈ ℂ)
27	15	nncnd 12178	. . . . . . . . . 10 ⊢ (((𝑁 ∈ ℕ ∧ 𝑁 ∈ Even ) ∧ (1 σ 𝑁) = (2 · 𝑁)) → (2↑(2 pCnt 𝑁)) ∈ ℂ)
28	15	nnne0d 12212	. . . . . . . . . 10 ⊢ (((𝑁 ∈ ℕ ∧ 𝑁 ∈ Even ) ∧ (1 σ 𝑁) = (2 · 𝑁)) → (2↑(2 pCnt 𝑁)) ≠ 0)
29	26, 27, 28	divcan2d 11936	. . . . . . . . 9 ⊢ (((𝑁 ∈ ℕ ∧ 𝑁 ∈ Even ) ∧ (1 σ 𝑁) = (2 · 𝑁)) → ((2↑(2 pCnt 𝑁)) · (𝑁 / (2↑(2 pCnt 𝑁)))) = 𝑁)
30	29	oveq2d 7385	. . . . . . . 8 ⊢ (((𝑁 ∈ ℕ ∧ 𝑁 ∈ Even ) ∧ (1 σ 𝑁) = (2 · 𝑁)) → (1 σ ((2↑(2 pCnt 𝑁)) · (𝑁 / (2↑(2 pCnt 𝑁))))) = (1 σ 𝑁))
31	29	oveq2d 7385	. . . . . . . 8 ⊢ (((𝑁 ∈ ℕ ∧ 𝑁 ∈ Even ) ∧ (1 σ 𝑁) = (2 · 𝑁)) → (2 · ((2↑(2 pCnt 𝑁)) · (𝑁 / (2↑(2 pCnt 𝑁))))) = (2 · 𝑁))
32	24, 30, 31	3eqtr4d 2774	. . . . . . 7 ⊢ (((𝑁 ∈ ℕ ∧ 𝑁 ∈ Even ) ∧ (1 σ 𝑁) = (2 · 𝑁)) → (1 σ ((2↑(2 pCnt 𝑁)) · (𝑁 / (2↑(2 pCnt 𝑁))))) = (2 · ((2↑(2 pCnt 𝑁)) · (𝑁 / (2↑(2 pCnt 𝑁))))))
33	7, 18, 23, 32	perfectALTVlem2 47716	. . . . . 6 ⊢ (((𝑁 ∈ ℕ ∧ 𝑁 ∈ Even ) ∧ (1 σ 𝑁) = (2 · 𝑁)) → ((𝑁 / (2↑(2 pCnt 𝑁))) ∈ ℙ ∧ (𝑁 / (2↑(2 pCnt 𝑁))) = ((2↑((2 pCnt 𝑁) + 1)) − 1)))
34	33	simprd 495	. . . . 5 ⊢ (((𝑁 ∈ ℕ ∧ 𝑁 ∈ Even ) ∧ (1 σ 𝑁) = (2 · 𝑁)) → (𝑁 / (2↑(2 pCnt 𝑁))) = ((2↑((2 pCnt 𝑁) + 1)) − 1))
35	33	simpld 494	. . . . 5 ⊢ (((𝑁 ∈ ℕ ∧ 𝑁 ∈ Even ) ∧ (1 σ 𝑁) = (2 · 𝑁)) → (𝑁 / (2↑(2 pCnt 𝑁))) ∈ ℙ)
36	34, 35	eqeltrrd 2829	. . . 4 ⊢ (((𝑁 ∈ ℕ ∧ 𝑁 ∈ Even ) ∧ (1 σ 𝑁) = (2 · 𝑁)) → ((2↑((2 pCnt 𝑁) + 1)) − 1) ∈ ℙ)
37	7	nncnd 12178	. . . . . . . . 9 ⊢ (((𝑁 ∈ ℕ ∧ 𝑁 ∈ Even ) ∧ (1 σ 𝑁) = (2 · 𝑁)) → (2 pCnt 𝑁) ∈ ℂ)
38		ax-1cn 11102	. . . . . . . . 9 ⊢ 1 ∈ ℂ
39		pncan 11403	. . . . . . . . 9 ⊢ (((2 pCnt 𝑁) ∈ ℂ ∧ 1 ∈ ℂ) → (((2 pCnt 𝑁) + 1) − 1) = (2 pCnt 𝑁))
40	37, 38, 39	sylancl 586	. . . . . . . 8 ⊢ (((𝑁 ∈ ℕ ∧ 𝑁 ∈ Even ) ∧ (1 σ 𝑁) = (2 · 𝑁)) → (((2 pCnt 𝑁) + 1) − 1) = (2 pCnt 𝑁))
41	40	eqcomd 2735	. . . . . . 7 ⊢ (((𝑁 ∈ ℕ ∧ 𝑁 ∈ Even ) ∧ (1 σ 𝑁) = (2 · 𝑁)) → (2 pCnt 𝑁) = (((2 pCnt 𝑁) + 1) − 1))
42	41	oveq2d 7385	. . . . . 6 ⊢ (((𝑁 ∈ ℕ ∧ 𝑁 ∈ Even ) ∧ (1 σ 𝑁) = (2 · 𝑁)) → (2↑(2 pCnt 𝑁)) = (2↑(((2 pCnt 𝑁) + 1) − 1)))
43	42, 34	oveq12d 7387	. . . . 5 ⊢ (((𝑁 ∈ ℕ ∧ 𝑁 ∈ Even ) ∧ (1 σ 𝑁) = (2 · 𝑁)) → ((2↑(2 pCnt 𝑁)) · (𝑁 / (2↑(2 pCnt 𝑁)))) = ((2↑(((2 pCnt 𝑁) + 1) − 1)) · ((2↑((2 pCnt 𝑁) + 1)) − 1)))
44	29, 43	eqtr3d 2766	. . . 4 ⊢ (((𝑁 ∈ ℕ ∧ 𝑁 ∈ Even ) ∧ (1 σ 𝑁) = (2 · 𝑁)) → 𝑁 = ((2↑(((2 pCnt 𝑁) + 1) − 1)) · ((2↑((2 pCnt 𝑁) + 1)) − 1)))
45		oveq2 7377	. . . . . . . 8 ⊢ (𝑝 = ((2 pCnt 𝑁) + 1) → (2↑𝑝) = (2↑((2 pCnt 𝑁) + 1)))
46	45	oveq1d 7384	. . . . . . 7 ⊢ (𝑝 = ((2 pCnt 𝑁) + 1) → ((2↑𝑝) − 1) = ((2↑((2 pCnt 𝑁) + 1)) − 1))
47	46	eleq1d 2813	. . . . . 6 ⊢ (𝑝 = ((2 pCnt 𝑁) + 1) → (((2↑𝑝) − 1) ∈ ℙ ↔ ((2↑((2 pCnt 𝑁) + 1)) − 1) ∈ ℙ))
48		oveq1 7376	. . . . . . . . 9 ⊢ (𝑝 = ((2 pCnt 𝑁) + 1) → (𝑝 − 1) = (((2 pCnt 𝑁) + 1) − 1))
49	48	oveq2d 7385	. . . . . . . 8 ⊢ (𝑝 = ((2 pCnt 𝑁) + 1) → (2↑(𝑝 − 1)) = (2↑(((2 pCnt 𝑁) + 1) − 1)))
50	49, 46	oveq12d 7387	. . . . . . 7 ⊢ (𝑝 = ((2 pCnt 𝑁) + 1) → ((2↑(𝑝 − 1)) · ((2↑𝑝) − 1)) = ((2↑(((2 pCnt 𝑁) + 1) − 1)) · ((2↑((2 pCnt 𝑁) + 1)) − 1)))
51	50	eqeq2d 2740	. . . . . 6 ⊢ (𝑝 = ((2 pCnt 𝑁) + 1) → (𝑁 = ((2↑(𝑝 − 1)) · ((2↑𝑝) − 1)) ↔ 𝑁 = ((2↑(((2 pCnt 𝑁) + 1) − 1)) · ((2↑((2 pCnt 𝑁) + 1)) − 1))))
52	47, 51	anbi12d 632	. . . . 5 ⊢ (𝑝 = ((2 pCnt 𝑁) + 1) → ((((2↑𝑝) − 1) ∈ ℙ ∧ 𝑁 = ((2↑(𝑝 − 1)) · ((2↑𝑝) − 1))) ↔ (((2↑((2 pCnt 𝑁) + 1)) − 1) ∈ ℙ ∧ 𝑁 = ((2↑(((2 pCnt 𝑁) + 1) − 1)) · ((2↑((2 pCnt 𝑁) + 1)) − 1)))))
53	52	rspcev 3585	. . . 4 ⊢ ((((2 pCnt 𝑁) + 1) ∈ ℤ ∧ (((2↑((2 pCnt 𝑁) + 1)) − 1) ∈ ℙ ∧ 𝑁 = ((2↑(((2 pCnt 𝑁) + 1) − 1)) · ((2↑((2 pCnt 𝑁) + 1)) − 1)))) → ∃𝑝 ∈ ℤ (((2↑𝑝) − 1) ∈ ℙ ∧ 𝑁 = ((2↑(𝑝 − 1)) · ((2↑𝑝) − 1))))
54	9, 36, 44, 53	syl12anc 836	. . 3 ⊢ (((𝑁 ∈ ℕ ∧ 𝑁 ∈ Even ) ∧ (1 σ 𝑁) = (2 · 𝑁)) → ∃𝑝 ∈ ℤ (((2↑𝑝) − 1) ∈ ℙ ∧ 𝑁 = ((2↑(𝑝 − 1)) · ((2↑𝑝) − 1))))
55	54	ex 412	. 2 ⊢ ((𝑁 ∈ ℕ ∧ 𝑁 ∈ Even ) → ((1 σ 𝑁) = (2 · 𝑁) → ∃𝑝 ∈ ℤ (((2↑𝑝) − 1) ∈ ℙ ∧ 𝑁 = ((2↑(𝑝 − 1)) · ((2↑𝑝) − 1)))))
56		perfect1 27172	. . . . . 6 ⊢ ((𝑝 ∈ ℤ ∧ ((2↑𝑝) − 1) ∈ ℙ) → (1 σ ((2↑(𝑝 − 1)) · ((2↑𝑝) − 1))) = ((2↑𝑝) · ((2↑𝑝) − 1)))
57		2cn 12237	. . . . . . . . 9 ⊢ 2 ∈ ℂ
58		mersenne 27171	. . . . . . . . . 10 ⊢ ((𝑝 ∈ ℤ ∧ ((2↑𝑝) − 1) ∈ ℙ) → 𝑝 ∈ ℙ)
59		prmnn 16620	. . . . . . . . . 10 ⊢ (𝑝 ∈ ℙ → 𝑝 ∈ ℕ)
60	58, 59	syl 17	. . . . . . . . 9 ⊢ ((𝑝 ∈ ℤ ∧ ((2↑𝑝) − 1) ∈ ℙ) → 𝑝 ∈ ℕ)
61		expm1t 14031	. . . . . . . . 9 ⊢ ((2 ∈ ℂ ∧ 𝑝 ∈ ℕ) → (2↑𝑝) = ((2↑(𝑝 − 1)) · 2))
62	57, 60, 61	sylancr 587	. . . . . . . 8 ⊢ ((𝑝 ∈ ℤ ∧ ((2↑𝑝) − 1) ∈ ℙ) → (2↑𝑝) = ((2↑(𝑝 − 1)) · 2))
63		nnm1nn0 12459	. . . . . . . . . . 11 ⊢ (𝑝 ∈ ℕ → (𝑝 − 1) ∈ ℕ₀)
64	60, 63	syl 17	. . . . . . . . . 10 ⊢ ((𝑝 ∈ ℤ ∧ ((2↑𝑝) − 1) ∈ ℙ) → (𝑝 − 1) ∈ ℕ₀)
65		expcl 14020	. . . . . . . . . 10 ⊢ ((2 ∈ ℂ ∧ (𝑝 − 1) ∈ ℕ₀) → (2↑(𝑝 − 1)) ∈ ℂ)
66	57, 64, 65	sylancr 587	. . . . . . . . 9 ⊢ ((𝑝 ∈ ℤ ∧ ((2↑𝑝) − 1) ∈ ℙ) → (2↑(𝑝 − 1)) ∈ ℂ)
67		mulcom 11130	. . . . . . . . 9 ⊢ (((2↑(𝑝 − 1)) ∈ ℂ ∧ 2 ∈ ℂ) → ((2↑(𝑝 − 1)) · 2) = (2 · (2↑(𝑝 − 1))))
68	66, 57, 67	sylancl 586	. . . . . . . 8 ⊢ ((𝑝 ∈ ℤ ∧ ((2↑𝑝) − 1) ∈ ℙ) → ((2↑(𝑝 − 1)) · 2) = (2 · (2↑(𝑝 − 1))))
69	62, 68	eqtrd 2764	. . . . . . 7 ⊢ ((𝑝 ∈ ℤ ∧ ((2↑𝑝) − 1) ∈ ℙ) → (2↑𝑝) = (2 · (2↑(𝑝 − 1))))
70	69	oveq1d 7384	. . . . . 6 ⊢ ((𝑝 ∈ ℤ ∧ ((2↑𝑝) − 1) ∈ ℙ) → ((2↑𝑝) · ((2↑𝑝) − 1)) = ((2 · (2↑(𝑝 − 1))) · ((2↑𝑝) − 1)))
71		2cnd 12240	. . . . . . 7 ⊢ ((𝑝 ∈ ℤ ∧ ((2↑𝑝) − 1) ∈ ℙ) → 2 ∈ ℂ)
72		prmnn 16620	. . . . . . . . 9 ⊢ (((2↑𝑝) − 1) ∈ ℙ → ((2↑𝑝) − 1) ∈ ℕ)
73	72	adantl 481	. . . . . . . 8 ⊢ ((𝑝 ∈ ℤ ∧ ((2↑𝑝) − 1) ∈ ℙ) → ((2↑𝑝) − 1) ∈ ℕ)
74	73	nncnd 12178	. . . . . . 7 ⊢ ((𝑝 ∈ ℤ ∧ ((2↑𝑝) − 1) ∈ ℙ) → ((2↑𝑝) − 1) ∈ ℂ)
75	71, 66, 74	mulassd 11173	. . . . . 6 ⊢ ((𝑝 ∈ ℤ ∧ ((2↑𝑝) − 1) ∈ ℙ) → ((2 · (2↑(𝑝 − 1))) · ((2↑𝑝) − 1)) = (2 · ((2↑(𝑝 − 1)) · ((2↑𝑝) − 1))))
76	56, 70, 75	3eqtrd 2768	. . . . 5 ⊢ ((𝑝 ∈ ℤ ∧ ((2↑𝑝) − 1) ∈ ℙ) → (1 σ ((2↑(𝑝 − 1)) · ((2↑𝑝) − 1))) = (2 · ((2↑(𝑝 − 1)) · ((2↑𝑝) − 1))))
77		oveq2 7377	. . . . . 6 ⊢ (𝑁 = ((2↑(𝑝 − 1)) · ((2↑𝑝) − 1)) → (1 σ 𝑁) = (1 σ ((2↑(𝑝 − 1)) · ((2↑𝑝) − 1))))
78		oveq2 7377	. . . . . 6 ⊢ (𝑁 = ((2↑(𝑝 − 1)) · ((2↑𝑝) − 1)) → (2 · 𝑁) = (2 · ((2↑(𝑝 − 1)) · ((2↑𝑝) − 1))))
79	77, 78	eqeq12d 2745	. . . . 5 ⊢ (𝑁 = ((2↑(𝑝 − 1)) · ((2↑𝑝) − 1)) → ((1 σ 𝑁) = (2 · 𝑁) ↔ (1 σ ((2↑(𝑝 − 1)) · ((2↑𝑝) − 1))) = (2 · ((2↑(𝑝 − 1)) · ((2↑𝑝) − 1)))))
80	76, 79	syl5ibrcom 247	. . . 4 ⊢ ((𝑝 ∈ ℤ ∧ ((2↑𝑝) − 1) ∈ ℙ) → (𝑁 = ((2↑(𝑝 − 1)) · ((2↑𝑝) − 1)) → (1 σ 𝑁) = (2 · 𝑁)))
81	80	impr 454	. . 3 ⊢ ((𝑝 ∈ ℤ ∧ (((2↑𝑝) − 1) ∈ ℙ ∧ 𝑁 = ((2↑(𝑝 − 1)) · ((2↑𝑝) − 1)))) → (1 σ 𝑁) = (2 · 𝑁))
82	81	rexlimiva 3126	. 2 ⊢ (∃𝑝 ∈ ℤ (((2↑𝑝) − 1) ∈ ℙ ∧ 𝑁 = ((2↑(𝑝 − 1)) · ((2↑𝑝) − 1))) → (1 σ 𝑁) = (2 · 𝑁))
83	55, 82	impbid1 225	1 ⊢ ((𝑁 ∈ ℕ ∧ 𝑁 ∈ Even ) → ((1 σ 𝑁) = (2 · 𝑁) ↔ ∃𝑝 ∈ ℤ (((2↑𝑝) − 1) ∈ ℙ ∧ 𝑁 = ((2↑(𝑝 − 1)) · ((2↑𝑝) − 1)))))

Colors of variables: wff setvar class

Syntax hints: ¬ wn 3 → wi 4 ↔ wb 206 ∧ wa 395 = wceq 1540 ∈ wcel 2109 ∃wrex 3053 class class class wbr 5102 (class class class)co 7369 ℂcc 11042 1c1 11045 + caddc 11047 · cmul 11049 − cmin 11381 / cdiv 11811 ℕcn 12162 2c2 12217 ℕ₀cn0 12418 ℤcz 12505 ↑cexp 14002 ∥ cdvds 16198 ℙcprime 16617 pCnt cpc 16783 σ csgm 27039 Even ceven 47618 Odd codd 47619

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1795 ax-4 1809 ax-5 1910 ax-6 1967 ax-7 2008 ax-8 2111 ax-9 2119 ax-10 2142 ax-11 2158 ax-12 2178 ax-ext 2701 ax-rep 5229 ax-sep 5246 ax-nul 5256 ax-pow 5315 ax-pr 5382 ax-un 7691 ax-inf2 9570 ax-cnex 11100 ax-resscn 11101 ax-1cn 11102 ax-icn 11103 ax-addcl 11104 ax-addrcl 11105 ax-mulcl 11106 ax-mulrcl 11107 ax-mulcom 11108 ax-addass 11109 ax-mulass 11110 ax-distr 11111 ax-i2m1 11112 ax-1ne0 11113 ax-1rid 11114 ax-rnegex 11115 ax-rrecex 11116 ax-cnre 11117 ax-pre-lttri 11118 ax-pre-lttrn 11119 ax-pre-ltadd 11120 ax-pre-mulgt0 11121 ax-pre-sup 11122 ax-addf 11123

This theorem depends on definitions: df-bi 207 df-an 396 df-or 848 df-3or 1087 df-3an 1088 df-tru 1543 df-fal 1553 df-ex 1780 df-nf 1784 df-sb 2066 df-mo 2533 df-eu 2562 df-clab 2708 df-cleq 2721 df-clel 2803 df-nfc 2878 df-ne 2926 df-nel 3030 df-ral 3045 df-rex 3054 df-rmo 3351 df-reu 3352 df-rab 3403 df-v 3446 df-sbc 3751 df-csb 3860 df-dif 3914 df-un 3916 df-in 3918 df-ss 3928 df-pss 3931 df-nul 4293 df-if 4485 df-pw 4561 df-sn 4586 df-pr 4588 df-tp 4590 df-op 4592 df-uni 4868 df-int 4907 df-iun 4953 df-iin 4954 df-br 5103 df-opab 5165 df-mpt 5184 df-tr 5210 df-id 5526 df-eprel 5531 df-po 5539 df-so 5540 df-fr 5584 df-se 5585 df-we 5586 df-xp 5637 df-rel 5638 df-cnv 5639 df-co 5640 df-dm 5641 df-rn 5642 df-res 5643 df-ima 5644 df-pred 6262 df-ord 6323 df-on 6324 df-lim 6325 df-suc 6326 df-iota 6452 df-fun 6501 df-fn 6502 df-f 6503 df-f1 6504 df-fo 6505 df-f1o 6506 df-fv 6507 df-isom 6508 df-riota 7326 df-ov 7372 df-oprab 7373 df-mpo 7374 df-of 7633 df-om 7823 df-1st 7947 df-2nd 7948 df-supp 8117 df-frecs 8237 df-wrecs 8268 df-recs 8317 df-rdg 8355 df-1o 8411 df-2o 8412 df-er 8648 df-map 8778 df-pm 8779 df-ixp 8848 df-en 8896 df-dom 8897 df-sdom 8898 df-fin 8899 df-fsupp 9289 df-fi 9338 df-sup 9369 df-inf 9370 df-oi 9439 df-card 9868 df-pnf 11186 df-mnf 11187 df-xr 11188 df-ltxr 11189 df-le 11190 df-sub 11383 df-neg 11384 df-div 11812 df-nn 12163 df-2 12225 df-3 12226 df-4 12227 df-5 12228 df-6 12229 df-7 12230 df-8 12231 df-9 12232 df-n0 12419 df-z 12506 df-dec 12626 df-uz 12770 df-q 12884 df-rp 12928 df-xneg 13048 df-xadd 13049 df-xmul 13050 df-ioo 13286 df-ioc 13287 df-ico 13288 df-icc 13289 df-fz 13445 df-fzo 13592 df-fl 13730 df-mod 13808 df-seq 13943 df-exp 14003 df-fac 14215 df-bc 14244 df-hash 14272 df-shft 15009 df-cj 15041 df-re 15042 df-im 15043 df-sqrt 15177 df-abs 15178 df-limsup 15413 df-clim 15430 df-rlim 15431 df-sum 15629 df-ef 16009 df-sin 16011 df-cos 16012 df-pi 16014 df-dvds 16199 df-gcd 16441 df-prm 16618 df-pc 16784 df-struct 17093 df-sets 17110 df-slot 17128 df-ndx 17140 df-base 17156 df-ress 17177 df-plusg 17209 df-mulr 17210 df-starv 17211 df-sca 17212 df-vsca 17213 df-ip 17214 df-tset 17215 df-ple 17216 df-ds 17218 df-unif 17219 df-hom 17220 df-cco 17221 df-rest 17361 df-topn 17362 df-0g 17380 df-gsum 17381 df-topgen 17382 df-pt 17383 df-prds 17386 df-xrs 17441 df-qtop 17446 df-imas 17447 df-xps 17449 df-mre 17523 df-mrc 17524 df-acs 17526 df-mgm 18549 df-sgrp 18628 df-mnd 18644 df-submnd 18693 df-mulg 18982 df-cntz 19231 df-cmn 19696 df-psmet 21288 df-xmet 21289 df-met 21290 df-bl 21291 df-mopn 21292 df-fbas 21293 df-fg 21294 df-cnfld 21297 df-top 22814 df-topon 22831 df-topsp 22853 df-bases 22866 df-cld 22939 df-ntr 22940 df-cls 22941 df-nei 23018 df-lp 23056 df-perf 23057 df-cn 23147 df-cnp 23148 df-haus 23235 df-tx 23482 df-hmeo 23675 df-fil 23766 df-fm 23858 df-flim 23859 df-flf 23860 df-xms 24241 df-ms 24242 df-tms 24243 df-cncf 24804 df-limc 25800 df-dv 25801 df-log 26498 df-cxp 26499 df-sgm 27045 df-even 47620 df-odd 47621

This theorem is referenced by: (None)

W3C validator