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Theorem perfect1 24753

Description: Euclid's contribution to the Euclid-Euler theorem. A number of the form 2↑(𝑝 − 1) · (2↑𝑝 − 1) is a perfect number. (Contributed by Mario Carneiro, 17-May-2016.)

**Assertion**
Ref	Expression
perfect1	⊢ ((𝑃 ∈ ℤ ∧ ((2↑𝑃) − 1) ∈ ℙ) → (1 σ ((2↑(𝑃 − 1)) · ((2↑𝑃) − 1))) = ((2↑𝑃) · ((2↑𝑃) − 1)))

**Proof of Theorem perfect1**
Step	Hyp	Ref	Expression
1		mersenne 24752	. . . . 5 ⊢ ((𝑃 ∈ ℤ ∧ ((2↑𝑃) − 1) ∈ ℙ) → 𝑃 ∈ ℙ)
2		prmnn 15226	. . . . 5 ⊢ (𝑃 ∈ ℙ → 𝑃 ∈ ℕ)
3	1, 2	syl 17	. . . 4 ⊢ ((𝑃 ∈ ℤ ∧ ((2↑𝑃) − 1) ∈ ℙ) → 𝑃 ∈ ℕ)
4		1sgm2ppw 24725	. . . 4 ⊢ (𝑃 ∈ ℕ → (1 σ (2↑(𝑃 − 1))) = ((2↑𝑃) − 1))
5	3, 4	syl 17	. . 3 ⊢ ((𝑃 ∈ ℤ ∧ ((2↑𝑃) − 1) ∈ ℙ) → (1 σ (2↑(𝑃 − 1))) = ((2↑𝑃) − 1))
6		1sgmprm 24724	. . . . 5 ⊢ (((2↑𝑃) − 1) ∈ ℙ → (1 σ ((2↑𝑃) − 1)) = (((2↑𝑃) − 1) + 1))
7	6	adantl 481	. . . 4 ⊢ ((𝑃 ∈ ℤ ∧ ((2↑𝑃) − 1) ∈ ℙ) → (1 σ ((2↑𝑃) − 1)) = (((2↑𝑃) − 1) + 1))
8		2nn 11062	. . . . . . 7 ⊢ 2 ∈ ℕ
9	3	nnnn0d 11228	. . . . . . 7 ⊢ ((𝑃 ∈ ℤ ∧ ((2↑𝑃) − 1) ∈ ℙ) → 𝑃 ∈ ℕ₀)
10		nnexpcl 12735	. . . . . . 7 ⊢ ((2 ∈ ℕ ∧ 𝑃 ∈ ℕ₀) → (2↑𝑃) ∈ ℕ)
11	8, 9, 10	sylancr 694	. . . . . 6 ⊢ ((𝑃 ∈ ℤ ∧ ((2↑𝑃) − 1) ∈ ℙ) → (2↑𝑃) ∈ ℕ)
12	11	nncnd 10913	. . . . 5 ⊢ ((𝑃 ∈ ℤ ∧ ((2↑𝑃) − 1) ∈ ℙ) → (2↑𝑃) ∈ ℂ)
13		ax-1cn 9873	. . . . 5 ⊢ 1 ∈ ℂ
14		npcan 10169	. . . . 5 ⊢ (((2↑𝑃) ∈ ℂ ∧ 1 ∈ ℂ) → (((2↑𝑃) − 1) + 1) = (2↑𝑃))
15	12, 13, 14	sylancl 693	. . . 4 ⊢ ((𝑃 ∈ ℤ ∧ ((2↑𝑃) − 1) ∈ ℙ) → (((2↑𝑃) − 1) + 1) = (2↑𝑃))
16	7, 15	eqtrd 2644	. . 3 ⊢ ((𝑃 ∈ ℤ ∧ ((2↑𝑃) − 1) ∈ ℙ) → (1 σ ((2↑𝑃) − 1)) = (2↑𝑃))
17	5, 16	oveq12d 6567	. 2 ⊢ ((𝑃 ∈ ℤ ∧ ((2↑𝑃) − 1) ∈ ℙ) → ((1 σ (2↑(𝑃 − 1))) · (1 σ ((2↑𝑃) − 1))) = (((2↑𝑃) − 1) · (2↑𝑃)))
18	13	a1i 11	. . 3 ⊢ ((𝑃 ∈ ℤ ∧ ((2↑𝑃) − 1) ∈ ℙ) → 1 ∈ ℂ)
19		nnm1nn0 11211	. . . . 5 ⊢ (𝑃 ∈ ℕ → (𝑃 − 1) ∈ ℕ₀)
20	3, 19	syl 17	. . . 4 ⊢ ((𝑃 ∈ ℤ ∧ ((2↑𝑃) − 1) ∈ ℙ) → (𝑃 − 1) ∈ ℕ₀)
21		nnexpcl 12735	. . . 4 ⊢ ((2 ∈ ℕ ∧ (𝑃 − 1) ∈ ℕ₀) → (2↑(𝑃 − 1)) ∈ ℕ)
22	8, 20, 21	sylancr 694	. . 3 ⊢ ((𝑃 ∈ ℤ ∧ ((2↑𝑃) − 1) ∈ ℙ) → (2↑(𝑃 − 1)) ∈ ℕ)
23		prmnn 15226	. . . 4 ⊢ (((2↑𝑃) − 1) ∈ ℙ → ((2↑𝑃) − 1) ∈ ℕ)
24	23	adantl 481	. . 3 ⊢ ((𝑃 ∈ ℤ ∧ ((2↑𝑃) − 1) ∈ ℙ) → ((2↑𝑃) − 1) ∈ ℕ)
25	22	nnzd 11357	. . . . 5 ⊢ ((𝑃 ∈ ℤ ∧ ((2↑𝑃) − 1) ∈ ℙ) → (2↑(𝑃 − 1)) ∈ ℤ)
26		prmz 15227	. . . . . 6 ⊢ (((2↑𝑃) − 1) ∈ ℙ → ((2↑𝑃) − 1) ∈ ℤ)
27	26	adantl 481	. . . . 5 ⊢ ((𝑃 ∈ ℤ ∧ ((2↑𝑃) − 1) ∈ ℙ) → ((2↑𝑃) − 1) ∈ ℤ)
28		gcdcom 15073	. . . . 5 ⊢ (((2↑(𝑃 − 1)) ∈ ℤ ∧ ((2↑𝑃) − 1) ∈ ℤ) → ((2↑(𝑃 − 1)) gcd ((2↑𝑃) − 1)) = (((2↑𝑃) − 1) gcd (2↑(𝑃 − 1))))
29	25, 27, 28	syl2anc 691	. . . 4 ⊢ ((𝑃 ∈ ℤ ∧ ((2↑𝑃) − 1) ∈ ℙ) → ((2↑(𝑃 − 1)) gcd ((2↑𝑃) − 1)) = (((2↑𝑃) − 1) gcd (2↑(𝑃 − 1))))
30		iddvds 14833	. . . . . . . 8 ⊢ (((2↑𝑃) − 1) ∈ ℤ → ((2↑𝑃) − 1) ∥ ((2↑𝑃) − 1))
31	27, 30	syl 17	. . . . . . 7 ⊢ ((𝑃 ∈ ℤ ∧ ((2↑𝑃) − 1) ∈ ℙ) → ((2↑𝑃) − 1) ∥ ((2↑𝑃) − 1))
32		prmuz2 15246	. . . . . . . . . 10 ⊢ (((2↑𝑃) − 1) ∈ ℙ → ((2↑𝑃) − 1) ∈ (ℤ_≥‘2))
33	32	adantl 481	. . . . . . . . 9 ⊢ ((𝑃 ∈ ℤ ∧ ((2↑𝑃) − 1) ∈ ℙ) → ((2↑𝑃) − 1) ∈ (ℤ_≥‘2))
34		eluz2b2 11637	. . . . . . . . . 10 ⊢ (((2↑𝑃) − 1) ∈ (ℤ_≥‘2) ↔ (((2↑𝑃) − 1) ∈ ℕ ∧ 1 < ((2↑𝑃) − 1)))
35	34	simprbi 479	. . . . . . . . 9 ⊢ (((2↑𝑃) − 1) ∈ (ℤ_≥‘2) → 1 < ((2↑𝑃) − 1))
36	33, 35	syl 17	. . . . . . . 8 ⊢ ((𝑃 ∈ ℤ ∧ ((2↑𝑃) − 1) ∈ ℙ) → 1 < ((2↑𝑃) − 1))
37		ndvdsp1 14973	. . . . . . . 8 ⊢ ((((2↑𝑃) − 1) ∈ ℤ ∧ ((2↑𝑃) − 1) ∈ ℕ ∧ 1 < ((2↑𝑃) − 1)) → (((2↑𝑃) − 1) ∥ ((2↑𝑃) − 1) → ¬ ((2↑𝑃) − 1) ∥ (((2↑𝑃) − 1) + 1)))
38	27, 24, 36, 37	syl3anc 1318	. . . . . . 7 ⊢ ((𝑃 ∈ ℤ ∧ ((2↑𝑃) − 1) ∈ ℙ) → (((2↑𝑃) − 1) ∥ ((2↑𝑃) − 1) → ¬ ((2↑𝑃) − 1) ∥ (((2↑𝑃) − 1) + 1)))
39	31, 38	mpd 15	. . . . . 6 ⊢ ((𝑃 ∈ ℤ ∧ ((2↑𝑃) − 1) ∈ ℙ) → ¬ ((2↑𝑃) − 1) ∥ (((2↑𝑃) − 1) + 1))
40		2z 11286	. . . . . . . . 9 ⊢ 2 ∈ ℤ
41	40	a1i 11	. . . . . . . 8 ⊢ ((𝑃 ∈ ℤ ∧ ((2↑𝑃) − 1) ∈ ℙ) → 2 ∈ ℤ)
42		dvdsmultr1 14857	. . . . . . . 8 ⊢ ((((2↑𝑃) − 1) ∈ ℤ ∧ (2↑(𝑃 − 1)) ∈ ℤ ∧ 2 ∈ ℤ) → (((2↑𝑃) − 1) ∥ (2↑(𝑃 − 1)) → ((2↑𝑃) − 1) ∥ ((2↑(𝑃 − 1)) · 2)))
43	27, 25, 41, 42	syl3anc 1318	. . . . . . 7 ⊢ ((𝑃 ∈ ℤ ∧ ((2↑𝑃) − 1) ∈ ℙ) → (((2↑𝑃) − 1) ∥ (2↑(𝑃 − 1)) → ((2↑𝑃) − 1) ∥ ((2↑(𝑃 − 1)) · 2)))
44		2cn 10968	. . . . . . . . . 10 ⊢ 2 ∈ ℂ
45		expm1t 12750	. . . . . . . . . 10 ⊢ ((2 ∈ ℂ ∧ 𝑃 ∈ ℕ) → (2↑𝑃) = ((2↑(𝑃 − 1)) · 2))
46	44, 3, 45	sylancr 694	. . . . . . . . 9 ⊢ ((𝑃 ∈ ℤ ∧ ((2↑𝑃) − 1) ∈ ℙ) → (2↑𝑃) = ((2↑(𝑃 − 1)) · 2))
47	15, 46	eqtr2d 2645	. . . . . . . 8 ⊢ ((𝑃 ∈ ℤ ∧ ((2↑𝑃) − 1) ∈ ℙ) → ((2↑(𝑃 − 1)) · 2) = (((2↑𝑃) − 1) + 1))
48	47	breq2d 4595	. . . . . . 7 ⊢ ((𝑃 ∈ ℤ ∧ ((2↑𝑃) − 1) ∈ ℙ) → (((2↑𝑃) − 1) ∥ ((2↑(𝑃 − 1)) · 2) ↔ ((2↑𝑃) − 1) ∥ (((2↑𝑃) − 1) + 1)))
49	43, 48	sylibd 228	. . . . . 6 ⊢ ((𝑃 ∈ ℤ ∧ ((2↑𝑃) − 1) ∈ ℙ) → (((2↑𝑃) − 1) ∥ (2↑(𝑃 − 1)) → ((2↑𝑃) − 1) ∥ (((2↑𝑃) − 1) + 1)))
50	39, 49	mtod 188	. . . . 5 ⊢ ((𝑃 ∈ ℤ ∧ ((2↑𝑃) − 1) ∈ ℙ) → ¬ ((2↑𝑃) − 1) ∥ (2↑(𝑃 − 1)))
51		simpr 476	. . . . . 6 ⊢ ((𝑃 ∈ ℤ ∧ ((2↑𝑃) − 1) ∈ ℙ) → ((2↑𝑃) − 1) ∈ ℙ)
52		coprm 15261	. . . . . 6 ⊢ ((((2↑𝑃) − 1) ∈ ℙ ∧ (2↑(𝑃 − 1)) ∈ ℤ) → (¬ ((2↑𝑃) − 1) ∥ (2↑(𝑃 − 1)) ↔ (((2↑𝑃) − 1) gcd (2↑(𝑃 − 1))) = 1))
53	51, 25, 52	syl2anc 691	. . . . 5 ⊢ ((𝑃 ∈ ℤ ∧ ((2↑𝑃) − 1) ∈ ℙ) → (¬ ((2↑𝑃) − 1) ∥ (2↑(𝑃 − 1)) ↔ (((2↑𝑃) − 1) gcd (2↑(𝑃 − 1))) = 1))
54	50, 53	mpbid 221	. . . 4 ⊢ ((𝑃 ∈ ℤ ∧ ((2↑𝑃) − 1) ∈ ℙ) → (((2↑𝑃) − 1) gcd (2↑(𝑃 − 1))) = 1)
55	29, 54	eqtrd 2644	. . 3 ⊢ ((𝑃 ∈ ℤ ∧ ((2↑𝑃) − 1) ∈ ℙ) → ((2↑(𝑃 − 1)) gcd ((2↑𝑃) − 1)) = 1)
56		sgmmul 24726	. . 3 ⊢ ((1 ∈ ℂ ∧ ((2↑(𝑃 − 1)) ∈ ℕ ∧ ((2↑𝑃) − 1) ∈ ℕ ∧ ((2↑(𝑃 − 1)) gcd ((2↑𝑃) − 1)) = 1)) → (1 σ ((2↑(𝑃 − 1)) · ((2↑𝑃) − 1))) = ((1 σ (2↑(𝑃 − 1))) · (1 σ ((2↑𝑃) − 1))))
57	18, 22, 24, 55, 56	syl13anc 1320	. 2 ⊢ ((𝑃 ∈ ℤ ∧ ((2↑𝑃) − 1) ∈ ℙ) → (1 σ ((2↑(𝑃 − 1)) · ((2↑𝑃) − 1))) = ((1 σ (2↑(𝑃 − 1))) · (1 σ ((2↑𝑃) − 1))))
58		subcl 10159	. . . 4 ⊢ (((2↑𝑃) ∈ ℂ ∧ 1 ∈ ℂ) → ((2↑𝑃) − 1) ∈ ℂ)
59	12, 13, 58	sylancl 693	. . 3 ⊢ ((𝑃 ∈ ℤ ∧ ((2↑𝑃) − 1) ∈ ℙ) → ((2↑𝑃) − 1) ∈ ℂ)
60	12, 59	mulcomd 9940	. 2 ⊢ ((𝑃 ∈ ℤ ∧ ((2↑𝑃) − 1) ∈ ℙ) → ((2↑𝑃) · ((2↑𝑃) − 1)) = (((2↑𝑃) − 1) · (2↑𝑃)))
61	17, 57, 60	3eqtr4d 2654	1 ⊢ ((𝑃 ∈ ℤ ∧ ((2↑𝑃) − 1) ∈ ℙ) → (1 σ ((2↑(𝑃 − 1)) · ((2↑𝑃) − 1))) = ((2↑𝑃) · ((2↑𝑃) − 1)))

Colors of variables: wff setvar class

Syntax hints: ¬ wn 3 → wi 4 ↔ wb 195 ∧ wa 383 = wceq 1475 ∈ wcel 1977 class class class wbr 4583 ‘cfv 5804 (class class class)co 6549 ℂcc 9813 1c1 9816 + caddc 9818 · cmul 9820 < clt 9953 − cmin 10145 ℕcn 10897 2c2 10947 ℕ₀cn0 11169 ℤcz 11254 ℤ_≥cuz 11563 ↑cexp 12722 ∥ cdvds 14821 gcd cgcd 15054 ℙcprime 15223 σ csgm 24622

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1713 ax-4 1728 ax-5 1827 ax-6 1875 ax-7 1922 ax-8 1979 ax-9 1986 ax-10 2006 ax-11 2021 ax-12 2034 ax-13 2234 ax-ext 2590 ax-rep 4699 ax-sep 4709 ax-nul 4717 ax-pow 4769 ax-pr 4833 ax-un 6847 ax-inf2 8421 ax-cnex 9871 ax-resscn 9872 ax-1cn 9873 ax-icn 9874 ax-addcl 9875 ax-addrcl 9876 ax-mulcl 9877 ax-mulrcl 9878 ax-mulcom 9879 ax-addass 9880 ax-mulass 9881 ax-distr 9882 ax-i2m1 9883 ax-1ne0 9884 ax-1rid 9885 ax-rnegex 9886 ax-rrecex 9887 ax-cnre 9888 ax-pre-lttri 9889 ax-pre-lttrn 9890 ax-pre-ltadd 9891 ax-pre-mulgt0 9892 ax-pre-sup 9893 ax-addf 9894 ax-mulf 9895

This theorem depends on definitions: df-bi 196 df-or 384 df-an 385 df-3or 1032 df-3an 1033 df-tru 1478 df-fal 1481 df-ex 1696 df-nf 1701 df-sb 1868 df-eu 2462 df-mo 2463 df-clab 2597 df-cleq 2603 df-clel 2606 df-nfc 2740 df-ne 2782 df-nel 2783 df-ral 2901 df-rex 2902 df-reu 2903 df-rmo 2904 df-rab 2905 df-v 3175 df-sbc 3403 df-csb 3500 df-dif 3543 df-un 3545 df-in 3547 df-ss 3554 df-pss 3556 df-nul 3875 df-if 4037 df-pw 4110 df-sn 4126 df-pr 4128 df-tp 4130 df-op 4132 df-uni 4373 df-int 4411 df-iun 4457 df-iin 4458 df-br 4584 df-opab 4644 df-mpt 4645 df-tr 4681 df-eprel 4949 df-id 4953 df-po 4959 df-so 4960 df-fr 4997 df-se 4998 df-we 4999 df-xp 5044 df-rel 5045 df-cnv 5046 df-co 5047 df-dm 5048 df-rn 5049 df-res 5050 df-ima 5051 df-pred 5597 df-ord 5643 df-on 5644 df-lim 5645 df-suc 5646 df-iota 5768 df-fun 5806 df-fn 5807 df-f 5808 df-f1 5809 df-fo 5810 df-f1o 5811 df-fv 5812 df-isom 5813 df-riota 6511 df-ov 6552 df-oprab 6553 df-mpt2 6554 df-of 6795 df-om 6958 df-1st 7059 df-2nd 7060 df-supp 7183 df-wrecs 7294 df-recs 7355 df-rdg 7393 df-1o 7447 df-2o 7448 df-oadd 7451 df-er 7629 df-map 7746 df-pm 7747 df-ixp 7795 df-en 7842 df-dom 7843 df-sdom 7844 df-fin 7845 df-fsupp 8159 df-fi 8200 df-sup 8231 df-inf 8232 df-oi 8298 df-card 8648 df-cda 8873 df-pnf 9955 df-mnf 9956 df-xr 9957 df-ltxr 9958 df-le 9959 df-sub 10147 df-neg 10148 df-div 10564 df-nn 10898 df-2 10956 df-3 10957 df-4 10958 df-5 10959 df-6 10960 df-7 10961 df-8 10962 df-9 10963 df-n0 11170 df-z 11255 df-dec 11370 df-uz 11564 df-q 11665 df-rp 11709 df-xneg 11822 df-xadd 11823 df-xmul 11824 df-ioo 12050 df-ioc 12051 df-ico 12052 df-icc 12053 df-fz 12198 df-fzo 12335 df-fl 12455 df-mod 12531 df-seq 12664 df-exp 12723 df-fac 12923 df-bc 12952 df-hash 12980 df-shft 13655 df-cj 13687 df-re 13688 df-im 13689 df-sqrt 13823 df-abs 13824 df-limsup 14050 df-clim 14067 df-rlim 14068 df-sum 14265 df-ef 14637 df-sin 14639 df-cos 14640 df-pi 14642 df-dvds 14822 df-gcd 15055 df-prm 15224 df-pc 15380 df-struct 15697 df-ndx 15698 df-slot 15699 df-base 15700 df-sets 15701 df-ress 15702 df-plusg 15781 df-mulr 15782 df-starv 15783 df-sca 15784 df-vsca 15785 df-ip 15786 df-tset 15787 df-ple 15788 df-ds 15791 df-unif 15792 df-hom 15793 df-cco 15794 df-rest 15906 df-topn 15907 df-0g 15925 df-gsum 15926 df-topgen 15927 df-pt 15928 df-prds 15931 df-xrs 15985 df-qtop 15990 df-imas 15991 df-xps 15993 df-mre 16069 df-mrc 16070 df-acs 16072 df-mgm 17065 df-sgrp 17107 df-mnd 17118 df-submnd 17159 df-mulg 17364 df-cntz 17573 df-cmn 18018 df-psmet 19559 df-xmet 19560 df-met 19561 df-bl 19562 df-mopn 19563 df-fbas 19564 df-fg 19565 df-cnfld 19568 df-top 20521 df-bases 20522 df-topon 20523 df-topsp 20524 df-cld 20633 df-ntr 20634 df-cls 20635 df-nei 20712 df-lp 20750 df-perf 20751 df-cn 20841 df-cnp 20842 df-haus 20929 df-tx 21175 df-hmeo 21368 df-fil 21460 df-fm 21552 df-flim 21553 df-flf 21554 df-xms 21935 df-ms 21936 df-tms 21937 df-cncf 22489 df-limc 23436 df-dv 23437 df-log 24107 df-cxp 24108 df-sgm 24628

This theorem is referenced by: perfect 24756 perfectALTV 40166

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