fmtnoprmfac1lem - Mathbox for Alexander van der Vekens

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Theorem fmtnoprmfac1lem 46983

Description: Lemma for fmtnoprmfac1 46984: 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 4124	. . . . . . 7 ⊢ (𝑃 ∈ (ℙ ∖ {2}) → 𝑃 ∈ ℙ)
2		prmnn 16645	. . . . . . 7 ⊢ (𝑃 ∈ ℙ → 𝑃 ∈ ℕ)
3	1, 2	syl 17	. . . . . 6 ⊢ (𝑃 ∈ (ℙ ∖ {2}) → 𝑃 ∈ ℕ)
4	3	ad2antlr 725	. . . . 5 ⊢ (((𝑁 ∈ ℕ ∧ 𝑃 ∈ (ℙ ∖ {2})) ∧ 𝑃 ∥ (FermatNo‘𝑁)) → 𝑃 ∈ ℕ)
5		nnnn0 12509	. . . . . . . . 9 ⊢ (𝑁 ∈ ℕ → 𝑁 ∈ ℕ₀)
6		fmtno 46948	. . . . . . . . 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 479	. . . . . 6 ⊢ ((𝑁 ∈ ℕ ∧ 𝑃 ∈ (ℙ ∖ {2})) → (𝑃 ∥ (FermatNo‘𝑁) ↔ 𝑃 ∥ ((2↑(2↑𝑁)) + 1)))
10	9	biimpa 475	. . . . 5 ⊢ (((𝑁 ∈ ℕ ∧ 𝑃 ∈ (ℙ ∖ {2})) ∧ 𝑃 ∥ (FermatNo‘𝑁)) → 𝑃 ∥ ((2↑(2↑𝑁)) + 1))
11		dvdsmod0 16237	. . . . 5 ⊢ ((𝑃 ∈ ℕ ∧ 𝑃 ∥ ((2↑(2↑𝑁)) + 1)) → (((2↑(2↑𝑁)) + 1) mod 𝑃) = 0)
12	4, 10, 11	syl2anc 582	. . . 4 ⊢ (((𝑁 ∈ ℕ ∧ 𝑃 ∈ (ℙ ∖ {2})) ∧ 𝑃 ∥ (FermatNo‘𝑁)) → (((2↑(2↑𝑁)) + 1) mod 𝑃) = 0)
13	12	ex 411	. . 3 ⊢ ((𝑁 ∈ ℕ ∧ 𝑃 ∈ (ℙ ∖ {2})) → (𝑃 ∥ (FermatNo‘𝑁) → (((2↑(2↑𝑁)) + 1) mod 𝑃) = 0))
14		2nn 12315	. . . . . . . . . 10 ⊢ 2 ∈ ℕ
15	14	a1i 11	. . . . . . . . 9 ⊢ (𝑁 ∈ ℕ → 2 ∈ ℕ)
16		2nn0 12519	. . . . . . . . . . 11 ⊢ 2 ∈ ℕ₀
17	16	a1i 11	. . . . . . . . . 10 ⊢ (𝑁 ∈ ℕ → 2 ∈ ℕ₀)
18	17, 5	nn0expcld 14241	. . . . . . . . 9 ⊢ (𝑁 ∈ ℕ → (2↑𝑁) ∈ ℕ₀)
19	15, 18	nnexpcld 14240	. . . . . . . 8 ⊢ (𝑁 ∈ ℕ → (2↑(2↑𝑁)) ∈ ℕ)
20	19	nnzd 12615	. . . . . . 7 ⊢ (𝑁 ∈ ℕ → (2↑(2↑𝑁)) ∈ ℤ)
21	20	adantr 479	. . . . . 6 ⊢ ((𝑁 ∈ ℕ ∧ 𝑃 ∈ (ℙ ∖ {2})) → (2↑(2↑𝑁)) ∈ ℤ)
22		1zzd 12623	. . . . . 6 ⊢ ((𝑁 ∈ ℕ ∧ 𝑃 ∈ (ℙ ∖ {2})) → 1 ∈ ℤ)
23	3	adantl 480	. . . . . 6 ⊢ ((𝑁 ∈ ℕ ∧ 𝑃 ∈ (ℙ ∖ {2})) → 𝑃 ∈ ℕ)
24		summodnegmod 16264	. . . . . 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 1368	. . . . 5 ⊢ ((𝑁 ∈ ℕ ∧ 𝑃 ∈ (ℙ ∖ {2})) → ((((2↑(2↑𝑁)) + 1) mod 𝑃) = 0 ↔ ((2↑(2↑𝑁)) mod 𝑃) = (-1 mod 𝑃)))
26		neg1z 12628	. . . . . . . . . 10 ⊢ -1 ∈ ℤ
27	21, 26	jctir 519	. . . . . . . . 9 ⊢ ((𝑁 ∈ ℕ ∧ 𝑃 ∈ (ℙ ∖ {2})) → ((2↑(2↑𝑁)) ∈ ℤ ∧ -1 ∈ ℤ))
28	27	adantr 479	. . . . . . . 8 ⊢ (((𝑁 ∈ ℕ ∧ 𝑃 ∈ (ℙ ∖ {2})) ∧ ((2↑(2↑𝑁)) mod 𝑃) = (-1 mod 𝑃)) → ((2↑(2↑𝑁)) ∈ ℤ ∧ -1 ∈ ℤ))
29	2	nnrpd 13046	. . . . . . . . . . 11 ⊢ (𝑃 ∈ ℙ → 𝑃 ∈ ℝ⁺)
30	1, 29	syl 17	. . . . . . . . . 10 ⊢ (𝑃 ∈ (ℙ ∖ {2}) → 𝑃 ∈ ℝ⁺)
31	17, 30	anim12i 611	. . . . . . . . 9 ⊢ ((𝑁 ∈ ℕ ∧ 𝑃 ∈ (ℙ ∖ {2})) → (2 ∈ ℕ₀ ∧ 𝑃 ∈ ℝ⁺))
32	31	adantr 479	. . . . . . . 8 ⊢ (((𝑁 ∈ ℕ ∧ 𝑃 ∈ (ℙ ∖ {2})) ∧ ((2↑(2↑𝑁)) mod 𝑃) = (-1 mod 𝑃)) → (2 ∈ ℕ₀ ∧ 𝑃 ∈ ℝ⁺))
33		simpr 483	. . . . . . . 8 ⊢ (((𝑁 ∈ ℕ ∧ 𝑃 ∈ (ℙ ∖ {2})) ∧ ((2↑(2↑𝑁)) mod 𝑃) = (-1 mod 𝑃)) → ((2↑(2↑𝑁)) mod 𝑃) = (-1 mod 𝑃))
34		modexp 14233	. . . . . . . 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 1368	. . . . . . 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 411	. . . . . 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 12320	. . . . . . . . . . . . 13 ⊢ (𝑁 ∈ ℕ → 2 ∈ ℂ)
38	37, 18, 17	3jca 1125	. . . . . . . . . . . 12 ⊢ (𝑁 ∈ ℕ → (2 ∈ ℂ ∧ (2↑𝑁) ∈ ℕ₀ ∧ 2 ∈ ℕ₀))
39	38	adantr 479	. . . . . . . . . . 11 ⊢ ((𝑁 ∈ ℕ ∧ 𝑃 ∈ (ℙ ∖ {2})) → (2 ∈ ℂ ∧ (2↑𝑁) ∈ ℕ₀ ∧ 2 ∈ ℕ₀))
40		expmul 14105	. . . . . . . . . . 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 12320	. . . . . . . . . . . . 13 ⊢ ((𝑁 ∈ ℕ ∧ 𝑃 ∈ (ℙ ∖ {2})) → 2 ∈ ℂ)
43	5	adantr 479	. . . . . . . . . . . . 13 ⊢ ((𝑁 ∈ ℕ ∧ 𝑃 ∈ (ℙ ∖ {2})) → 𝑁 ∈ ℕ₀)
44	42, 43	expp1d 14144	. . . . . . . . . . . 12 ⊢ ((𝑁 ∈ ℕ ∧ 𝑃 ∈ (ℙ ∖ {2})) → (2↑(𝑁 + 1)) = ((2↑𝑁) · 2))
45	44	eqcomd 2731	. . . . . . . . . . 11 ⊢ ((𝑁 ∈ ℕ ∧ 𝑃 ∈ (ℙ ∖ {2})) → ((2↑𝑁) · 2) = (2↑(𝑁 + 1)))
46	45	oveq2d 7433	. . . . . . . . . 10 ⊢ ((𝑁 ∈ ℕ ∧ 𝑃 ∈ (ℙ ∖ {2})) → (2↑((2↑𝑁) · 2)) = (2↑(2↑(𝑁 + 1))))
47	41, 46	eqtr3d 2767	. . . . . . . . 9 ⊢ ((𝑁 ∈ ℕ ∧ 𝑃 ∈ (ℙ ∖ {2})) → ((2↑(2↑𝑁))↑2) = (2↑(2↑(𝑁 + 1))))
48	47	oveq1d 7432	. . . . . . . 8 ⊢ ((𝑁 ∈ ℕ ∧ 𝑃 ∈ (ℙ ∖ {2})) → (((2↑(2↑𝑁))↑2) mod 𝑃) = ((2↑(2↑(𝑁 + 1))) mod 𝑃))
49		neg1sqe1 14192	. . . . . . . . . . 11 ⊢ (-1↑2) = 1
50	49	a1i 11	. . . . . . . . . 10 ⊢ ((𝑁 ∈ ℕ ∧ 𝑃 ∈ (ℙ ∖ {2})) → (-1↑2) = 1)
51	50	oveq1d 7432	. . . . . . . . 9 ⊢ ((𝑁 ∈ ℕ ∧ 𝑃 ∈ (ℙ ∖ {2})) → ((-1↑2) mod 𝑃) = (1 mod 𝑃))
52	3	nnred 12257	. . . . . . . . . . 11 ⊢ (𝑃 ∈ (ℙ ∖ {2}) → 𝑃 ∈ ℝ)
53		prmgt1 16668	. . . . . . . . . . . 12 ⊢ (𝑃 ∈ ℙ → 1 < 𝑃)
54	1, 53	syl 17	. . . . . . . . . . 11 ⊢ (𝑃 ∈ (ℙ ∖ {2}) → 1 < 𝑃)
55		1mod 13901	. . . . . . . . . . 11 ⊢ ((𝑃 ∈ ℝ ∧ 1 < 𝑃) → (1 mod 𝑃) = 1)
56	52, 54, 55	syl2anc 582	. . . . . . . . . 10 ⊢ (𝑃 ∈ (ℙ ∖ {2}) → (1 mod 𝑃) = 1)
57	56	adantl 480	. . . . . . . . 9 ⊢ ((𝑁 ∈ ℕ ∧ 𝑃 ∈ (ℙ ∖ {2})) → (1 mod 𝑃) = 1)
58	51, 57	eqtrd 2765	. . . . . . . 8 ⊢ ((𝑁 ∈ ℕ ∧ 𝑃 ∈ (ℙ ∖ {2})) → ((-1↑2) mod 𝑃) = 1)
59	48, 58	eqeq12d 2741	. . . . . . 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 765	. . . . . . . . . 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 479	. . . . . . . . . . . . . . . 16 ⊢ ((𝑁 ∈ ℕ ∧ 𝑃 ∈ ℙ) → (2↑(2↑𝑁)) ∈ ℤ)
62		1zzd 12623	. . . . . . . . . . . . . . . 16 ⊢ ((𝑁 ∈ ℕ ∧ 𝑃 ∈ ℙ) → 1 ∈ ℤ)
63	2	adantl 480	. . . . . . . . . . . . . . . 16 ⊢ ((𝑁 ∈ ℕ ∧ 𝑃 ∈ ℙ) → 𝑃 ∈ ℕ)
64	61, 62, 63	3jca 1125	. . . . . . . . . . . . . . 15 ⊢ ((𝑁 ∈ ℕ ∧ 𝑃 ∈ ℙ) → ((2↑(2↑𝑁)) ∈ ℤ ∧ 1 ∈ ℤ ∧ 𝑃 ∈ ℕ))
65	1, 64	sylan2 591	. . . . . . . . . . . . . 14 ⊢ ((𝑁 ∈ ℕ ∧ 𝑃 ∈ (ℙ ∖ {2})) → ((2↑(2↑𝑁)) ∈ ℤ ∧ 1 ∈ ℤ ∧ 𝑃 ∈ ℕ))
66	65	adantr 479	. . . . . . . . . . . . 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 13915	. . . . . . . . . . . . . . . . . 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 4794	. . . . . . . . . . . . . . . . . . . 20 ⊢ (𝑃 ∈ (ℙ ∖ {2}) → 𝑃 ≠ 2)
71	70	adantl 480	. . . . . . . . . . . . . . . . . . 19 ⊢ ((𝑁 ∈ ℕ ∧ 𝑃 ∈ (ℙ ∖ {2})) → 𝑃 ≠ 2)
72	71	necomd 2986	. . . . . . . . . . . . . . . . . 18 ⊢ ((𝑁 ∈ ℕ ∧ 𝑃 ∈ (ℙ ∖ {2})) → 2 ≠ 𝑃)
73	3	nncnd 12258	. . . . . . . . . . . . . . . . . . . . . 22 ⊢ (𝑃 ∈ (ℙ ∖ {2}) → 𝑃 ∈ ℂ)
74	73	adantl 480	. . . . . . . . . . . . . . . . . . . . 21 ⊢ ((𝑁 ∈ ℕ ∧ 𝑃 ∈ (ℙ ∖ {2})) → 𝑃 ∈ ℂ)
75		1cnd 11239	. . . . . . . . . . . . . . . . . . . . 21 ⊢ ((𝑁 ∈ ℕ ∧ 𝑃 ∈ (ℙ ∖ {2})) → 1 ∈ ℂ)
76	74, 75, 75	subadd2d 11620	. . . . . . . . . . . . . . . . . . . 20 ⊢ ((𝑁 ∈ ℕ ∧ 𝑃 ∈ (ℙ ∖ {2})) → ((𝑃 − 1) = 1 ↔ (1 + 1) = 𝑃))
77		1p1e2 12367	. . . . . . . . . . . . . . . . . . . . 21 ⊢ (1 + 1) = 2
78	77	eqeq1i 2730	. . . . . . . . . . . . . . . . . . . 20 ⊢ ((1 + 1) = 𝑃 ↔ 2 = 𝑃)
79	76, 78	bitrdi 286	. . . . . . . . . . . . . . . . . . 19 ⊢ ((𝑁 ∈ ℕ ∧ 𝑃 ∈ (ℙ ∖ {2})) → ((𝑃 − 1) = 1 ↔ 2 = 𝑃))
80	79	necon3bid 2975	. . . . . . . . . . . . . . . . . 18 ⊢ ((𝑁 ∈ ℕ ∧ 𝑃 ∈ (ℙ ∖ {2})) → ((𝑃 − 1) ≠ 1 ↔ 2 ≠ 𝑃))
81	72, 80	mpbird 256	. . . . . . . . . . . . . . . . 17 ⊢ ((𝑁 ∈ ℕ ∧ 𝑃 ∈ (ℙ ∖ {2})) → (𝑃 − 1) ≠ 1)
82	69, 81	eqnetrd 2998	. . . . . . . . . . . . . . . 16 ⊢ ((𝑁 ∈ ℕ ∧ 𝑃 ∈ (ℙ ∖ {2})) → (-1 mod 𝑃) ≠ 1)
83	82	adantr 479	. . . . . . . . . . . . . . 15 ⊢ (((𝑁 ∈ ℕ ∧ 𝑃 ∈ (ℙ ∖ {2})) ∧ ((2↑(2↑(𝑁 + 1))) mod 𝑃) = 1) → (-1 mod 𝑃) ≠ 1)
84	83	adantr 479	. . . . . . . . . . . . . 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 2729	. . . . . . . . . . . . . . . 16 ⊢ (((2↑(2↑𝑁)) mod 𝑃) = (-1 mod 𝑃) → (((2↑(2↑𝑁)) mod 𝑃) = 1 ↔ (-1 mod 𝑃) = 1))
86	85	adantl 480	. . . . . . . . . . . . . . 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 2975	. . . . . . . . . . . . . 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 256	. . . . . . . . . . . . 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 411	. . . . . . . . . . . 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 405	. . . . . . . . . 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 767	. . . . . . . . . 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 46982	. . . . . . . . . 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 835	. . . . . . . . 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 411	. . . . . . . 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 411	. . . . . . 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 1114	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 394 ∧ w3a 1084 = wceq 1533 ∈ wcel 2098 ≠ wne 2930 ∖ cdif 3942 {csn 4629 class class class wbr 5148 ‘cfv 6547 (class class class)co 7417 ℂcc 11136 ℝcr 11137 0cc0 11138 1c1 11139 + caddc 11141 · cmul 11143 < clt 11278 − cmin 11474 -cneg 11475 ℕcn 12242 2c2 12297 ℕ₀cn0 12502 ℤcz 12588 ℝ⁺crp 13006 mod cmo 13867 ↑cexp 14059 ∥ cdvds 16231 ℙcprime 16642 od_ℤcodz 16732 FermatNocfmtno 46946

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1789 ax-4 1803 ax-5 1905 ax-6 1963 ax-7 2003 ax-8 2100 ax-9 2108 ax-10 2129 ax-11 2146 ax-12 2166 ax-ext 2696 ax-rep 5285 ax-sep 5299 ax-nul 5306 ax-pow 5364 ax-pr 5428 ax-un 7739 ax-cnex 11194 ax-resscn 11195 ax-1cn 11196 ax-icn 11197 ax-addcl 11198 ax-addrcl 11199 ax-mulcl 11200 ax-mulrcl 11201 ax-mulcom 11202 ax-addass 11203 ax-mulass 11204 ax-distr 11205 ax-i2m1 11206 ax-1ne0 11207 ax-1rid 11208 ax-rnegex 11209 ax-rrecex 11210 ax-cnre 11211 ax-pre-lttri 11212 ax-pre-lttrn 11213 ax-pre-ltadd 11214 ax-pre-mulgt0 11215 ax-pre-sup 11216

This theorem depends on definitions: df-bi 206 df-an 395 df-or 846 df-3or 1085 df-3an 1086 df-tru 1536 df-fal 1546 df-ex 1774 df-nf 1778 df-sb 2060 df-mo 2528 df-eu 2557 df-clab 2703 df-cleq 2717 df-clel 2802 df-nfc 2877 df-ne 2931 df-nel 3037 df-ral 3052 df-rex 3061 df-rmo 3364 df-reu 3365 df-rab 3420 df-v 3465 df-sbc 3775 df-csb 3891 df-dif 3948 df-un 3950 df-in 3952 df-ss 3962 df-pss 3965 df-nul 4324 df-if 4530 df-pw 4605 df-sn 4630 df-pr 4632 df-op 4636 df-uni 4909 df-int 4950 df-iun 4998 df-br 5149 df-opab 5211 df-mpt 5232 df-tr 5266 df-id 5575 df-eprel 5581 df-po 5589 df-so 5590 df-fr 5632 df-we 5634 df-xp 5683 df-rel 5684 df-cnv 5685 df-co 5686 df-dm 5687 df-rn 5688 df-res 5689 df-ima 5690 df-pred 6305 df-ord 6372 df-on 6373 df-lim 6374 df-suc 6375 df-iota 6499 df-fun 6549 df-fn 6550 df-f 6551 df-f1 6552 df-fo 6553 df-f1o 6554 df-fv 6555 df-riota 7373 df-ov 7420 df-oprab 7421 df-mpo 7422 df-om 7870 df-1st 7992 df-2nd 7993 df-frecs 8285 df-wrecs 8316 df-recs 8390 df-rdg 8429 df-1o 8485 df-2o 8486 df-oadd 8489 df-er 8723 df-en 8963 df-dom 8964 df-sdom 8965 df-fin 8966 df-sup 9465 df-inf 9466 df-card 9962 df-pnf 11280 df-mnf 11281 df-xr 11282 df-ltxr 11283 df-le 11284 df-sub 11476 df-neg 11477 df-div 11902 df-nn 12243 df-2 12305 df-3 12306 df-n0 12503 df-xnn0 12575 df-z 12589 df-uz 12853 df-q 12963 df-rp 13007 df-fz 13517 df-fzo 13660 df-fl 13790 df-mod 13868 df-seq 14000 df-exp 14060 df-hash 14323 df-cj 15079 df-re 15080 df-im 15081 df-sqrt 15215 df-abs 15216 df-dvds 16232 df-gcd 16470 df-prm 16643 df-odz 16734 df-phi 16735 df-pc 16806 df-fmtno 46947

This theorem is referenced by: fmtnoprmfac1 46984 fmtnoprmfac2 46986

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