fmtnoprmfac1lem - Mathbox for Alexander van der Vekens

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Theorem fmtnoprmfac1lem 46219

Description: Lemma for fmtnoprmfac1 46220: The order of 2 modulo a prime that divides the n-th Fermat number is 2^(n+1). (Contributed by AV, 25-Jul-2021.) (Proof shortened by AV, 18-Mar-2022.)

**Assertion**
Ref	Expression
fmtnoprmfac1lem	⊢ ((𝑁 ∈ ℕ ∧ 𝑃 ∈ (ℙ ∖ {2}) ∧ 𝑃 ∥ (FermatNo‘𝑁)) → ((od_ℤ‘𝑃)‘2) = (2↑(𝑁 + 1)))

**Proof of Theorem fmtnoprmfac1lem**
Step	Hyp	Ref	Expression
1		eldifi 4126	. . . . . . 7 ⊢ (𝑃 ∈ (ℙ ∖ {2}) → 𝑃 ∈ ℙ)
2		prmnn 16608	. . . . . . 7 ⊢ (𝑃 ∈ ℙ → 𝑃 ∈ ℕ)
3	1, 2	syl 17	. . . . . 6 ⊢ (𝑃 ∈ (ℙ ∖ {2}) → 𝑃 ∈ ℕ)
4	3	ad2antlr 726	. . . . 5 ⊢ (((𝑁 ∈ ℕ ∧ 𝑃 ∈ (ℙ ∖ {2})) ∧ 𝑃 ∥ (FermatNo‘𝑁)) → 𝑃 ∈ ℕ)
5		nnnn0 12476	. . . . . . . . 9 ⊢ (𝑁 ∈ ℕ → 𝑁 ∈ ℕ₀)
6		fmtno 46184	. . . . . . . . 9 ⊢ (𝑁 ∈ ℕ₀ → (FermatNo‘𝑁) = ((2↑(2↑𝑁)) + 1))
7	5, 6	syl 17	. . . . . . . 8 ⊢ (𝑁 ∈ ℕ → (FermatNo‘𝑁) = ((2↑(2↑𝑁)) + 1))
8	7	breq2d 5160	. . . . . . 7 ⊢ (𝑁 ∈ ℕ → (𝑃 ∥ (FermatNo‘𝑁) ↔ 𝑃 ∥ ((2↑(2↑𝑁)) + 1)))
9	8	adantr 482	. . . . . 6 ⊢ ((𝑁 ∈ ℕ ∧ 𝑃 ∈ (ℙ ∖ {2})) → (𝑃 ∥ (FermatNo‘𝑁) ↔ 𝑃 ∥ ((2↑(2↑𝑁)) + 1)))
10	9	biimpa 478	. . . . 5 ⊢ (((𝑁 ∈ ℕ ∧ 𝑃 ∈ (ℙ ∖ {2})) ∧ 𝑃 ∥ (FermatNo‘𝑁)) → 𝑃 ∥ ((2↑(2↑𝑁)) + 1))
11		dvdsmod0 16200	. . . . 5 ⊢ ((𝑃 ∈ ℕ ∧ 𝑃 ∥ ((2↑(2↑𝑁)) + 1)) → (((2↑(2↑𝑁)) + 1) mod 𝑃) = 0)
12	4, 10, 11	syl2anc 585	. . . 4 ⊢ (((𝑁 ∈ ℕ ∧ 𝑃 ∈ (ℙ ∖ {2})) ∧ 𝑃 ∥ (FermatNo‘𝑁)) → (((2↑(2↑𝑁)) + 1) mod 𝑃) = 0)
13	12	ex 414	. . 3 ⊢ ((𝑁 ∈ ℕ ∧ 𝑃 ∈ (ℙ ∖ {2})) → (𝑃 ∥ (FermatNo‘𝑁) → (((2↑(2↑𝑁)) + 1) mod 𝑃) = 0))
14		2nn 12282	. . . . . . . . . 10 ⊢ 2 ∈ ℕ
15	14	a1i 11	. . . . . . . . 9 ⊢ (𝑁 ∈ ℕ → 2 ∈ ℕ)
16		2nn0 12486	. . . . . . . . . . 11 ⊢ 2 ∈ ℕ₀
17	16	a1i 11	. . . . . . . . . 10 ⊢ (𝑁 ∈ ℕ → 2 ∈ ℕ₀)
18	17, 5	nn0expcld 14206	. . . . . . . . 9 ⊢ (𝑁 ∈ ℕ → (2↑𝑁) ∈ ℕ₀)
19	15, 18	nnexpcld 14205	. . . . . . . 8 ⊢ (𝑁 ∈ ℕ → (2↑(2↑𝑁)) ∈ ℕ)
20	19	nnzd 12582	. . . . . . 7 ⊢ (𝑁 ∈ ℕ → (2↑(2↑𝑁)) ∈ ℤ)
21	20	adantr 482	. . . . . 6 ⊢ ((𝑁 ∈ ℕ ∧ 𝑃 ∈ (ℙ ∖ {2})) → (2↑(2↑𝑁)) ∈ ℤ)
22		1zzd 12590	. . . . . 6 ⊢ ((𝑁 ∈ ℕ ∧ 𝑃 ∈ (ℙ ∖ {2})) → 1 ∈ ℤ)
23	3	adantl 483	. . . . . 6 ⊢ ((𝑁 ∈ ℕ ∧ 𝑃 ∈ (ℙ ∖ {2})) → 𝑃 ∈ ℕ)
24		summodnegmod 16227	. . . . . 6 ⊢ (((2↑(2↑𝑁)) ∈ ℤ ∧ 1 ∈ ℤ ∧ 𝑃 ∈ ℕ) → ((((2↑(2↑𝑁)) + 1) mod 𝑃) = 0 ↔ ((2↑(2↑𝑁)) mod 𝑃) = (-1 mod 𝑃)))
25	21, 22, 23, 24	syl3anc 1372	. . . . 5 ⊢ ((𝑁 ∈ ℕ ∧ 𝑃 ∈ (ℙ ∖ {2})) → ((((2↑(2↑𝑁)) + 1) mod 𝑃) = 0 ↔ ((2↑(2↑𝑁)) mod 𝑃) = (-1 mod 𝑃)))
26		neg1z 12595	. . . . . . . . . 10 ⊢ -1 ∈ ℤ
27	21, 26	jctir 522	. . . . . . . . 9 ⊢ ((𝑁 ∈ ℕ ∧ 𝑃 ∈ (ℙ ∖ {2})) → ((2↑(2↑𝑁)) ∈ ℤ ∧ -1 ∈ ℤ))
28	27	adantr 482	. . . . . . . 8 ⊢ (((𝑁 ∈ ℕ ∧ 𝑃 ∈ (ℙ ∖ {2})) ∧ ((2↑(2↑𝑁)) mod 𝑃) = (-1 mod 𝑃)) → ((2↑(2↑𝑁)) ∈ ℤ ∧ -1 ∈ ℤ))
29	2	nnrpd 13011	. . . . . . . . . . 11 ⊢ (𝑃 ∈ ℙ → 𝑃 ∈ ℝ⁺)
30	1, 29	syl 17	. . . . . . . . . 10 ⊢ (𝑃 ∈ (ℙ ∖ {2}) → 𝑃 ∈ ℝ⁺)
31	17, 30	anim12i 614	. . . . . . . . 9 ⊢ ((𝑁 ∈ ℕ ∧ 𝑃 ∈ (ℙ ∖ {2})) → (2 ∈ ℕ₀ ∧ 𝑃 ∈ ℝ⁺))
32	31	adantr 482	. . . . . . . 8 ⊢ (((𝑁 ∈ ℕ ∧ 𝑃 ∈ (ℙ ∖ {2})) ∧ ((2↑(2↑𝑁)) mod 𝑃) = (-1 mod 𝑃)) → (2 ∈ ℕ₀ ∧ 𝑃 ∈ ℝ⁺))
33		simpr 486	. . . . . . . 8 ⊢ (((𝑁 ∈ ℕ ∧ 𝑃 ∈ (ℙ ∖ {2})) ∧ ((2↑(2↑𝑁)) mod 𝑃) = (-1 mod 𝑃)) → ((2↑(2↑𝑁)) mod 𝑃) = (-1 mod 𝑃))
34		modexp 14198	. . . . . . . 8 ⊢ ((((2↑(2↑𝑁)) ∈ ℤ ∧ -1 ∈ ℤ) ∧ (2 ∈ ℕ₀ ∧ 𝑃 ∈ ℝ⁺) ∧ ((2↑(2↑𝑁)) mod 𝑃) = (-1 mod 𝑃)) → (((2↑(2↑𝑁))↑2) mod 𝑃) = ((-1↑2) mod 𝑃))
35	28, 32, 33, 34	syl3anc 1372	. . . . . . 7 ⊢ (((𝑁 ∈ ℕ ∧ 𝑃 ∈ (ℙ ∖ {2})) ∧ ((2↑(2↑𝑁)) mod 𝑃) = (-1 mod 𝑃)) → (((2↑(2↑𝑁))↑2) mod 𝑃) = ((-1↑2) mod 𝑃))
36	35	ex 414	. . . . . 6 ⊢ ((𝑁 ∈ ℕ ∧ 𝑃 ∈ (ℙ ∖ {2})) → (((2↑(2↑𝑁)) mod 𝑃) = (-1 mod 𝑃) → (((2↑(2↑𝑁))↑2) mod 𝑃) = ((-1↑2) mod 𝑃)))
37		2cnd 12287	. . . . . . . . . . . . 13 ⊢ (𝑁 ∈ ℕ → 2 ∈ ℂ)
38	37, 18, 17	3jca 1129	. . . . . . . . . . . 12 ⊢ (𝑁 ∈ ℕ → (2 ∈ ℂ ∧ (2↑𝑁) ∈ ℕ₀ ∧ 2 ∈ ℕ₀))
39	38	adantr 482	. . . . . . . . . . 11 ⊢ ((𝑁 ∈ ℕ ∧ 𝑃 ∈ (ℙ ∖ {2})) → (2 ∈ ℂ ∧ (2↑𝑁) ∈ ℕ₀ ∧ 2 ∈ ℕ₀))
40		expmul 14070	. . . . . . . . . . 11 ⊢ ((2 ∈ ℂ ∧ (2↑𝑁) ∈ ℕ₀ ∧ 2 ∈ ℕ₀) → (2↑((2↑𝑁) · 2)) = ((2↑(2↑𝑁))↑2))
41	39, 40	syl 17	. . . . . . . . . 10 ⊢ ((𝑁 ∈ ℕ ∧ 𝑃 ∈ (ℙ ∖ {2})) → (2↑((2↑𝑁) · 2)) = ((2↑(2↑𝑁))↑2))
42		2cnd 12287	. . . . . . . . . . . . 13 ⊢ ((𝑁 ∈ ℕ ∧ 𝑃 ∈ (ℙ ∖ {2})) → 2 ∈ ℂ)
43	5	adantr 482	. . . . . . . . . . . . 13 ⊢ ((𝑁 ∈ ℕ ∧ 𝑃 ∈ (ℙ ∖ {2})) → 𝑁 ∈ ℕ₀)
44	42, 43	expp1d 14109	. . . . . . . . . . . 12 ⊢ ((𝑁 ∈ ℕ ∧ 𝑃 ∈ (ℙ ∖ {2})) → (2↑(𝑁 + 1)) = ((2↑𝑁) · 2))
45	44	eqcomd 2739	. . . . . . . . . . 11 ⊢ ((𝑁 ∈ ℕ ∧ 𝑃 ∈ (ℙ ∖ {2})) → ((2↑𝑁) · 2) = (2↑(𝑁 + 1)))
46	45	oveq2d 7422	. . . . . . . . . 10 ⊢ ((𝑁 ∈ ℕ ∧ 𝑃 ∈ (ℙ ∖ {2})) → (2↑((2↑𝑁) · 2)) = (2↑(2↑(𝑁 + 1))))
47	41, 46	eqtr3d 2775	. . . . . . . . 9 ⊢ ((𝑁 ∈ ℕ ∧ 𝑃 ∈ (ℙ ∖ {2})) → ((2↑(2↑𝑁))↑2) = (2↑(2↑(𝑁 + 1))))
48	47	oveq1d 7421	. . . . . . . 8 ⊢ ((𝑁 ∈ ℕ ∧ 𝑃 ∈ (ℙ ∖ {2})) → (((2↑(2↑𝑁))↑2) mod 𝑃) = ((2↑(2↑(𝑁 + 1))) mod 𝑃))
49		neg1sqe1 14157	. . . . . . . . . . 11 ⊢ (-1↑2) = 1
50	49	a1i 11	. . . . . . . . . 10 ⊢ ((𝑁 ∈ ℕ ∧ 𝑃 ∈ (ℙ ∖ {2})) → (-1↑2) = 1)
51	50	oveq1d 7421	. . . . . . . . 9 ⊢ ((𝑁 ∈ ℕ ∧ 𝑃 ∈ (ℙ ∖ {2})) → ((-1↑2) mod 𝑃) = (1 mod 𝑃))
52	3	nnred 12224	. . . . . . . . . . 11 ⊢ (𝑃 ∈ (ℙ ∖ {2}) → 𝑃 ∈ ℝ)
53		prmgt1 16631	. . . . . . . . . . . 12 ⊢ (𝑃 ∈ ℙ → 1 < 𝑃)
54	1, 53	syl 17	. . . . . . . . . . 11 ⊢ (𝑃 ∈ (ℙ ∖ {2}) → 1 < 𝑃)
55		1mod 13865	. . . . . . . . . . 11 ⊢ ((𝑃 ∈ ℝ ∧ 1 < 𝑃) → (1 mod 𝑃) = 1)
56	52, 54, 55	syl2anc 585	. . . . . . . . . 10 ⊢ (𝑃 ∈ (ℙ ∖ {2}) → (1 mod 𝑃) = 1)
57	56	adantl 483	. . . . . . . . 9 ⊢ ((𝑁 ∈ ℕ ∧ 𝑃 ∈ (ℙ ∖ {2})) → (1 mod 𝑃) = 1)
58	51, 57	eqtrd 2773	. . . . . . . 8 ⊢ ((𝑁 ∈ ℕ ∧ 𝑃 ∈ (ℙ ∖ {2})) → ((-1↑2) mod 𝑃) = 1)
59	48, 58	eqeq12d 2749	. . . . . . 7 ⊢ ((𝑁 ∈ ℕ ∧ 𝑃 ∈ (ℙ ∖ {2})) → ((((2↑(2↑𝑁))↑2) mod 𝑃) = ((-1↑2) mod 𝑃) ↔ ((2↑(2↑(𝑁 + 1))) mod 𝑃) = 1))
60		simpll 766	. . . . . . . . . 10 ⊢ ((((𝑁 ∈ ℕ ∧ 𝑃 ∈ (ℙ ∖ {2})) ∧ ((2↑(2↑(𝑁 + 1))) mod 𝑃) = 1) ∧ (((2↑(2↑𝑁)) + 1) mod 𝑃) = 0) → (𝑁 ∈ ℕ ∧ 𝑃 ∈ (ℙ ∖ {2})))
61	20	adantr 482	. . . . . . . . . . . . . . . 16 ⊢ ((𝑁 ∈ ℕ ∧ 𝑃 ∈ ℙ) → (2↑(2↑𝑁)) ∈ ℤ)
62		1zzd 12590	. . . . . . . . . . . . . . . 16 ⊢ ((𝑁 ∈ ℕ ∧ 𝑃 ∈ ℙ) → 1 ∈ ℤ)
63	2	adantl 483	. . . . . . . . . . . . . . . 16 ⊢ ((𝑁 ∈ ℕ ∧ 𝑃 ∈ ℙ) → 𝑃 ∈ ℕ)
64	61, 62, 63	3jca 1129	. . . . . . . . . . . . . . 15 ⊢ ((𝑁 ∈ ℕ ∧ 𝑃 ∈ ℙ) → ((2↑(2↑𝑁)) ∈ ℤ ∧ 1 ∈ ℤ ∧ 𝑃 ∈ ℕ))
65	1, 64	sylan2 594	. . . . . . . . . . . . . 14 ⊢ ((𝑁 ∈ ℕ ∧ 𝑃 ∈ (ℙ ∖ {2})) → ((2↑(2↑𝑁)) ∈ ℤ ∧ 1 ∈ ℤ ∧ 𝑃 ∈ ℕ))
66	65	adantr 482	. . . . . . . . . . . . 13 ⊢ (((𝑁 ∈ ℕ ∧ 𝑃 ∈ (ℙ ∖ {2})) ∧ ((2↑(2↑(𝑁 + 1))) mod 𝑃) = 1) → ((2↑(2↑𝑁)) ∈ ℤ ∧ 1 ∈ ℤ ∧ 𝑃 ∈ ℕ))
67	66, 24	syl 17	. . . . . . . . . . . 12 ⊢ (((𝑁 ∈ ℕ ∧ 𝑃 ∈ (ℙ ∖ {2})) ∧ ((2↑(2↑(𝑁 + 1))) mod 𝑃) = 1) → ((((2↑(2↑𝑁)) + 1) mod 𝑃) = 0 ↔ ((2↑(2↑𝑁)) mod 𝑃) = (-1 mod 𝑃)))
68		m1modnnsub1 13879	. . . . . . . . . . . . . . . . . 18 ⊢ (𝑃 ∈ ℕ → (-1 mod 𝑃) = (𝑃 − 1))
69	23, 68	syl 17	. . . . . . . . . . . . . . . . 17 ⊢ ((𝑁 ∈ ℕ ∧ 𝑃 ∈ (ℙ ∖ {2})) → (-1 mod 𝑃) = (𝑃 − 1))
70		eldifsni 4793	. . . . . . . . . . . . . . . . . . . 20 ⊢ (𝑃 ∈ (ℙ ∖ {2}) → 𝑃 ≠ 2)
71	70	adantl 483	. . . . . . . . . . . . . . . . . . 19 ⊢ ((𝑁 ∈ ℕ ∧ 𝑃 ∈ (ℙ ∖ {2})) → 𝑃 ≠ 2)
72	71	necomd 2997	. . . . . . . . . . . . . . . . . 18 ⊢ ((𝑁 ∈ ℕ ∧ 𝑃 ∈ (ℙ ∖ {2})) → 2 ≠ 𝑃)
73	3	nncnd 12225	. . . . . . . . . . . . . . . . . . . . . 22 ⊢ (𝑃 ∈ (ℙ ∖ {2}) → 𝑃 ∈ ℂ)
74	73	adantl 483	. . . . . . . . . . . . . . . . . . . . 21 ⊢ ((𝑁 ∈ ℕ ∧ 𝑃 ∈ (ℙ ∖ {2})) → 𝑃 ∈ ℂ)
75		1cnd 11206	. . . . . . . . . . . . . . . . . . . . 21 ⊢ ((𝑁 ∈ ℕ ∧ 𝑃 ∈ (ℙ ∖ {2})) → 1 ∈ ℂ)
76	74, 75, 75	subadd2d 11587	. . . . . . . . . . . . . . . . . . . 20 ⊢ ((𝑁 ∈ ℕ ∧ 𝑃 ∈ (ℙ ∖ {2})) → ((𝑃 − 1) = 1 ↔ (1 + 1) = 𝑃))
77		1p1e2 12334	. . . . . . . . . . . . . . . . . . . . 21 ⊢ (1 + 1) = 2
78	77	eqeq1i 2738	. . . . . . . . . . . . . . . . . . . 20 ⊢ ((1 + 1) = 𝑃 ↔ 2 = 𝑃)
79	76, 78	bitrdi 287	. . . . . . . . . . . . . . . . . . 19 ⊢ ((𝑁 ∈ ℕ ∧ 𝑃 ∈ (ℙ ∖ {2})) → ((𝑃 − 1) = 1 ↔ 2 = 𝑃))
80	79	necon3bid 2986	. . . . . . . . . . . . . . . . . 18 ⊢ ((𝑁 ∈ ℕ ∧ 𝑃 ∈ (ℙ ∖ {2})) → ((𝑃 − 1) ≠ 1 ↔ 2 ≠ 𝑃))
81	72, 80	mpbird 257	. . . . . . . . . . . . . . . . 17 ⊢ ((𝑁 ∈ ℕ ∧ 𝑃 ∈ (ℙ ∖ {2})) → (𝑃 − 1) ≠ 1)
82	69, 81	eqnetrd 3009	. . . . . . . . . . . . . . . 16 ⊢ ((𝑁 ∈ ℕ ∧ 𝑃 ∈ (ℙ ∖ {2})) → (-1 mod 𝑃) ≠ 1)
83	82	adantr 482	. . . . . . . . . . . . . . 15 ⊢ (((𝑁 ∈ ℕ ∧ 𝑃 ∈ (ℙ ∖ {2})) ∧ ((2↑(2↑(𝑁 + 1))) mod 𝑃) = 1) → (-1 mod 𝑃) ≠ 1)
84	83	adantr 482	. . . . . . . . . . . . . 14 ⊢ ((((𝑁 ∈ ℕ ∧ 𝑃 ∈ (ℙ ∖ {2})) ∧ ((2↑(2↑(𝑁 + 1))) mod 𝑃) = 1) ∧ ((2↑(2↑𝑁)) mod 𝑃) = (-1 mod 𝑃)) → (-1 mod 𝑃) ≠ 1)
85		eqeq1 2737	. . . . . . . . . . . . . . . 16 ⊢ (((2↑(2↑𝑁)) mod 𝑃) = (-1 mod 𝑃) → (((2↑(2↑𝑁)) mod 𝑃) = 1 ↔ (-1 mod 𝑃) = 1))
86	85	adantl 483	. . . . . . . . . . . . . . 15 ⊢ ((((𝑁 ∈ ℕ ∧ 𝑃 ∈ (ℙ ∖ {2})) ∧ ((2↑(2↑(𝑁 + 1))) mod 𝑃) = 1) ∧ ((2↑(2↑𝑁)) mod 𝑃) = (-1 mod 𝑃)) → (((2↑(2↑𝑁)) mod 𝑃) = 1 ↔ (-1 mod 𝑃) = 1))
87	86	necon3bid 2986	. . . . . . . . . . . . . 14 ⊢ ((((𝑁 ∈ ℕ ∧ 𝑃 ∈ (ℙ ∖ {2})) ∧ ((2↑(2↑(𝑁 + 1))) mod 𝑃) = 1) ∧ ((2↑(2↑𝑁)) mod 𝑃) = (-1 mod 𝑃)) → (((2↑(2↑𝑁)) mod 𝑃) ≠ 1 ↔ (-1 mod 𝑃) ≠ 1))
88	84, 87	mpbird 257	. . . . . . . . . . . . 13 ⊢ ((((𝑁 ∈ ℕ ∧ 𝑃 ∈ (ℙ ∖ {2})) ∧ ((2↑(2↑(𝑁 + 1))) mod 𝑃) = 1) ∧ ((2↑(2↑𝑁)) mod 𝑃) = (-1 mod 𝑃)) → ((2↑(2↑𝑁)) mod 𝑃) ≠ 1)
89	88	ex 414	. . . . . . . . . . . 12 ⊢ (((𝑁 ∈ ℕ ∧ 𝑃 ∈ (ℙ ∖ {2})) ∧ ((2↑(2↑(𝑁 + 1))) mod 𝑃) = 1) → (((2↑(2↑𝑁)) mod 𝑃) = (-1 mod 𝑃) → ((2↑(2↑𝑁)) mod 𝑃) ≠ 1))
90	67, 89	sylbid 239	. . . . . . . . . . 11 ⊢ (((𝑁 ∈ ℕ ∧ 𝑃 ∈ (ℙ ∖ {2})) ∧ ((2↑(2↑(𝑁 + 1))) mod 𝑃) = 1) → ((((2↑(2↑𝑁)) + 1) mod 𝑃) = 0 → ((2↑(2↑𝑁)) mod 𝑃) ≠ 1))
91	90	imp 408	. . . . . . . . . 10 ⊢ ((((𝑁 ∈ ℕ ∧ 𝑃 ∈ (ℙ ∖ {2})) ∧ ((2↑(2↑(𝑁 + 1))) mod 𝑃) = 1) ∧ (((2↑(2↑𝑁)) + 1) mod 𝑃) = 0) → ((2↑(2↑𝑁)) mod 𝑃) ≠ 1)
92		simplr 768	. . . . . . . . . 10 ⊢ ((((𝑁 ∈ ℕ ∧ 𝑃 ∈ (ℙ ∖ {2})) ∧ ((2↑(2↑(𝑁 + 1))) mod 𝑃) = 1) ∧ (((2↑(2↑𝑁)) + 1) mod 𝑃) = 0) → ((2↑(2↑(𝑁 + 1))) mod 𝑃) = 1)
93		odz2prm2pw 46218	. . . . . . . . . 10 ⊢ (((𝑁 ∈ ℕ ∧ 𝑃 ∈ (ℙ ∖ {2})) ∧ (((2↑(2↑𝑁)) mod 𝑃) ≠ 1 ∧ ((2↑(2↑(𝑁 + 1))) mod 𝑃) = 1)) → ((od_ℤ‘𝑃)‘2) = (2↑(𝑁 + 1)))
94	60, 91, 92, 93	syl12anc 836	. . . . . . . . 9 ⊢ ((((𝑁 ∈ ℕ ∧ 𝑃 ∈ (ℙ ∖ {2})) ∧ ((2↑(2↑(𝑁 + 1))) mod 𝑃) = 1) ∧ (((2↑(2↑𝑁)) + 1) mod 𝑃) = 0) → ((od_ℤ‘𝑃)‘2) = (2↑(𝑁 + 1)))
95	94	ex 414	. . . . . . . 8 ⊢ (((𝑁 ∈ ℕ ∧ 𝑃 ∈ (ℙ ∖ {2})) ∧ ((2↑(2↑(𝑁 + 1))) mod 𝑃) = 1) → ((((2↑(2↑𝑁)) + 1) mod 𝑃) = 0 → ((od_ℤ‘𝑃)‘2) = (2↑(𝑁 + 1))))
96	95	ex 414	. . . . . . 7 ⊢ ((𝑁 ∈ ℕ ∧ 𝑃 ∈ (ℙ ∖ {2})) → (((2↑(2↑(𝑁 + 1))) mod 𝑃) = 1 → ((((2↑(2↑𝑁)) + 1) mod 𝑃) = 0 → ((od_ℤ‘𝑃)‘2) = (2↑(𝑁 + 1)))))
97	59, 96	sylbid 239	. . . . . 6 ⊢ ((𝑁 ∈ ℕ ∧ 𝑃 ∈ (ℙ ∖ {2})) → ((((2↑(2↑𝑁))↑2) mod 𝑃) = ((-1↑2) mod 𝑃) → ((((2↑(2↑𝑁)) + 1) mod 𝑃) = 0 → ((od_ℤ‘𝑃)‘2) = (2↑(𝑁 + 1)))))
98	36, 97	syld 47	. . . . 5 ⊢ ((𝑁 ∈ ℕ ∧ 𝑃 ∈ (ℙ ∖ {2})) → (((2↑(2↑𝑁)) mod 𝑃) = (-1 mod 𝑃) → ((((2↑(2↑𝑁)) + 1) mod 𝑃) = 0 → ((od_ℤ‘𝑃)‘2) = (2↑(𝑁 + 1)))))
99	25, 98	sylbid 239	. . . 4 ⊢ ((𝑁 ∈ ℕ ∧ 𝑃 ∈ (ℙ ∖ {2})) → ((((2↑(2↑𝑁)) + 1) mod 𝑃) = 0 → ((((2↑(2↑𝑁)) + 1) mod 𝑃) = 0 → ((od_ℤ‘𝑃)‘2) = (2↑(𝑁 + 1)))))
100	99	pm2.43d 53	. . 3 ⊢ ((𝑁 ∈ ℕ ∧ 𝑃 ∈ (ℙ ∖ {2})) → ((((2↑(2↑𝑁)) + 1) mod 𝑃) = 0 → ((od_ℤ‘𝑃)‘2) = (2↑(𝑁 + 1))))
101	13, 100	syld 47	. 2 ⊢ ((𝑁 ∈ ℕ ∧ 𝑃 ∈ (ℙ ∖ {2})) → (𝑃 ∥ (FermatNo‘𝑁) → ((od_ℤ‘𝑃)‘2) = (2↑(𝑁 + 1))))
102	101	3impia 1118	1 ⊢ ((𝑁 ∈ ℕ ∧ 𝑃 ∈ (ℙ ∖ {2}) ∧ 𝑃 ∥ (FermatNo‘𝑁)) → ((od_ℤ‘𝑃)‘2) = (2↑(𝑁 + 1)))

Colors of variables: wff setvar class

Syntax hints: → wi 4 ↔ wb 205 ∧ wa 397 ∧ w3a 1088 = wceq 1542 ∈ wcel 2107 ≠ wne 2941 ∖ cdif 3945 {csn 4628 class class class wbr 5148 ‘cfv 6541 (class class class)co 7406 ℂcc 11105 ℝcr 11106 0cc0 11107 1c1 11108 + caddc 11110 · cmul 11112 < clt 11245 − cmin 11441 -cneg 11442 ℕcn 12209 2c2 12264 ℕ₀cn0 12469 ℤcz 12555 ℝ⁺crp 12971 mod cmo 13831 ↑cexp 14024 ∥ cdvds 16194 ℙcprime 16605 od_ℤcodz 16693 FermatNocfmtno 46182

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1798 ax-4 1812 ax-5 1914 ax-6 1972 ax-7 2012 ax-8 2109 ax-9 2117 ax-10 2138 ax-11 2155 ax-12 2172 ax-ext 2704 ax-rep 5285 ax-sep 5299 ax-nul 5306 ax-pow 5363 ax-pr 5427 ax-un 7722 ax-cnex 11163 ax-resscn 11164 ax-1cn 11165 ax-icn 11166 ax-addcl 11167 ax-addrcl 11168 ax-mulcl 11169 ax-mulrcl 11170 ax-mulcom 11171 ax-addass 11172 ax-mulass 11173 ax-distr 11174 ax-i2m1 11175 ax-1ne0 11176 ax-1rid 11177 ax-rnegex 11178 ax-rrecex 11179 ax-cnre 11180 ax-pre-lttri 11181 ax-pre-lttrn 11182 ax-pre-ltadd 11183 ax-pre-mulgt0 11184 ax-pre-sup 11185

This theorem depends on definitions: df-bi 206 df-an 398 df-or 847 df-3or 1089 df-3an 1090 df-tru 1545 df-fal 1555 df-ex 1783 df-nf 1787 df-sb 2069 df-mo 2535 df-eu 2564 df-clab 2711 df-cleq 2725 df-clel 2811 df-nfc 2886 df-ne 2942 df-nel 3048 df-ral 3063 df-rex 3072 df-rmo 3377 df-reu 3378 df-rab 3434 df-v 3477 df-sbc 3778 df-csb 3894 df-dif 3951 df-un 3953 df-in 3955 df-ss 3965 df-pss 3967 df-nul 4323 df-if 4529 df-pw 4604 df-sn 4629 df-pr 4631 df-op 4635 df-uni 4909 df-int 4951 df-iun 4999 df-br 5149 df-opab 5211 df-mpt 5232 df-tr 5266 df-id 5574 df-eprel 5580 df-po 5588 df-so 5589 df-fr 5631 df-we 5633 df-xp 5682 df-rel 5683 df-cnv 5684 df-co 5685 df-dm 5686 df-rn 5687 df-res 5688 df-ima 5689 df-pred 6298 df-ord 6365 df-on 6366 df-lim 6367 df-suc 6368 df-iota 6493 df-fun 6543 df-fn 6544 df-f 6545 df-f1 6546 df-fo 6547 df-f1o 6548 df-fv 6549 df-riota 7362 df-ov 7409 df-oprab 7410 df-mpo 7411 df-om 7853 df-1st 7972 df-2nd 7973 df-frecs 8263 df-wrecs 8294 df-recs 8368 df-rdg 8407 df-1o 8463 df-2o 8464 df-oadd 8467 df-er 8700 df-en 8937 df-dom 8938 df-sdom 8939 df-fin 8940 df-sup 9434 df-inf 9435 df-card 9931 df-pnf 11247 df-mnf 11248 df-xr 11249 df-ltxr 11250 df-le 11251 df-sub 11443 df-neg 11444 df-div 11869 df-nn 12210 df-2 12272 df-3 12273 df-n0 12470 df-xnn0 12542 df-z 12556 df-uz 12820 df-q 12930 df-rp 12972 df-fz 13482 df-fzo 13625 df-fl 13754 df-mod 13832 df-seq 13964 df-exp 14025 df-hash 14288 df-cj 15043 df-re 15044 df-im 15045 df-sqrt 15179 df-abs 15180 df-dvds 16195 df-gcd 16433 df-prm 16606 df-odz 16695 df-phi 16696 df-pc 16767 df-fmtno 46183

This theorem is referenced by: fmtnoprmfac1 46220 fmtnoprmfac2 46222

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