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Theorem perfect1 27612

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 27611	. . . . 5 ⊢ ((𝑃 ∈ ℤ ∧ ((2↑𝑃) − 1) ∈ ℙ) → 𝑃 ∈ ℙ)
2		prmnn 16893	. . . . 5 ⊢ (𝑃 ∈ ℙ → 𝑃 ∈ ℕ)
3	1, 2	syl 18	. . . 4 ⊢ ((𝑃 ∈ ℤ ∧ ((2↑𝑃) − 1) ∈ ℙ) → 𝑃 ∈ ℕ)
4		1sgm2ppw 27584	. . . 4 ⊢ (𝑃 ∈ ℕ → (1 σ (2↑(𝑃 − 1))) = ((2↑𝑃) − 1))
5	3, 4	syl 18	. . 3 ⊢ ((𝑃 ∈ ℤ ∧ ((2↑𝑃) − 1) ∈ ℙ) → (1 σ (2↑(𝑃 − 1))) = ((2↑𝑃) − 1))
6		1sgmprm 27583	. . . . 5 ⊢ (((2↑𝑃) − 1) ∈ ℙ → (1 σ ((2↑𝑃) − 1)) = (((2↑𝑃) − 1) + 1))
7	6	adantl 487	. . . 4 ⊢ ((𝑃 ∈ ℤ ∧ ((2↑𝑃) − 1) ∈ ℙ) → (1 σ ((2↑𝑃) − 1)) = (((2↑𝑃) − 1) + 1))
8		2nn 12456	. . . . . . 7 ⊢ 2 ∈ ℕ
9	3	nnnn0d 12707	. . . . . . 7 ⊢ ((𝑃 ∈ ℤ ∧ ((2↑𝑃) − 1) ∈ ℙ) → 𝑃 ∈ ℕ₀)
10		nnexpcl 14257	. . . . . . 7 ⊢ ((2 ∈ ℕ ∧ 𝑃 ∈ ℕ₀) → (2↑𝑃) ∈ ℕ)
11	8, 9, 10	sylancr 599	. . . . . 6 ⊢ ((𝑃 ∈ ℤ ∧ ((2↑𝑃) − 1) ∈ ℙ) → (2↑𝑃) ∈ ℕ)
12	11	nncnd 12391	. . . . 5 ⊢ ((𝑃 ∈ ℤ ∧ ((2↑𝑃) − 1) ∈ ℙ) → (2↑𝑃) ∈ ℂ)
13		ax-1cn 11297	. . . . 5 ⊢ 1 ∈ ℂ
14		npcan 11605	. . . . 5 ⊢ (((2↑𝑃) ∈ ℂ ∧ 1 ∈ ℂ) → (((2↑𝑃) − 1) + 1) = (2↑𝑃))
15	12, 13, 14	sylancl 598	. . . 4 ⊢ ((𝑃 ∈ ℤ ∧ ((2↑𝑃) − 1) ∈ ℙ) → (((2↑𝑃) − 1) + 1) = (2↑𝑃))
16	7, 15	eqtrd 2798	. . 3 ⊢ ((𝑃 ∈ ℤ ∧ ((2↑𝑃) − 1) ∈ ℙ) → (1 σ ((2↑𝑃) − 1)) = (2↑𝑃))
17	5, 16	oveq12d 7469	. 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 12687	. . . . 5 ⊢ (𝑃 ∈ ℕ → (𝑃 − 1) ∈ ℕ₀)
20	3, 19	syl 18	. . . 4 ⊢ ((𝑃 ∈ ℤ ∧ ((2↑𝑃) − 1) ∈ ℙ) → (𝑃 − 1) ∈ ℕ₀)
21		nnexpcl 14257	. . . 4 ⊢ ((2 ∈ ℕ ∧ (𝑃 − 1) ∈ ℕ₀) → (2↑(𝑃 − 1)) ∈ ℕ)
22	8, 20, 21	sylancr 599	. . 3 ⊢ ((𝑃 ∈ ℤ ∧ ((2↑𝑃) − 1) ∈ ℙ) → (2↑(𝑃 − 1)) ∈ ℕ)
23		prmnn 16893	. . . 4 ⊢ (((2↑𝑃) − 1) ∈ ℙ → ((2↑𝑃) − 1) ∈ ℕ)
24	23	adantl 487	. . 3 ⊢ ((𝑃 ∈ ℤ ∧ ((2↑𝑃) − 1) ∈ ℙ) → ((2↑𝑃) − 1) ∈ ℕ)
25	22	nnzd 12759	. . . . 5 ⊢ ((𝑃 ∈ ℤ ∧ ((2↑𝑃) − 1) ∈ ℙ) → (2↑(𝑃 − 1)) ∈ ℤ)
26		prmz 16894	. . . . . 6 ⊢ (((2↑𝑃) − 1) ∈ ℙ → ((2↑𝑃) − 1) ∈ ℤ)
27	26	adantl 487	. . . . 5 ⊢ ((𝑃 ∈ ℤ ∧ ((2↑𝑃) − 1) ∈ ℙ) → ((2↑𝑃) − 1) ∈ ℤ)
28	25, 27	gcdcomd 16730	. . . 4 ⊢ ((𝑃 ∈ ℤ ∧ ((2↑𝑃) − 1) ∈ ℙ) → ((2↑(𝑃 − 1)) gcd ((2↑𝑃) − 1)) = (((2↑𝑃) − 1) gcd (2↑(𝑃 − 1))))
29		iddvds 16483	. . . . . . . 8 ⊢ (((2↑𝑃) − 1) ∈ ℤ → ((2↑𝑃) − 1) ∥ ((2↑𝑃) − 1))
30	27, 29	syl 18	. . . . . . 7 ⊢ ((𝑃 ∈ ℤ ∧ ((2↑𝑃) − 1) ∈ ℙ) → ((2↑𝑃) − 1) ∥ ((2↑𝑃) − 1))
31		prmuz2 16915	. . . . . . . . . 10 ⊢ (((2↑𝑃) − 1) ∈ ℙ → ((2↑𝑃) − 1) ∈ (ℤ_≥‘2))
32	31	adantl 487	. . . . . . . . 9 ⊢ ((𝑃 ∈ ℤ ∧ ((2↑𝑃) − 1) ∈ ℙ) → ((2↑𝑃) − 1) ∈ (ℤ_≥‘2))
33		eluz2gt1 13087	. . . . . . . . 9 ⊢ (((2↑𝑃) − 1) ∈ (ℤ_≥‘2) → 1 < ((2↑𝑃) − 1))
34	32, 33	syl 18	. . . . . . . 8 ⊢ ((𝑃 ∈ ℤ ∧ ((2↑𝑃) − 1) ∈ ℙ) → 1 < ((2↑𝑃) − 1))
35		ndvdsp1 16625	. . . . . . . 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)))
36	27, 24, 34, 35	syl3anc 1399	. . . . . . 7 ⊢ ((𝑃 ∈ ℤ ∧ ((2↑𝑃) − 1) ∈ ℙ) → (((2↑𝑃) − 1) ∥ ((2↑𝑃) − 1) → ¬ ((2↑𝑃) − 1) ∥ (((2↑𝑃) − 1) + 1)))
37	30, 36	mpd 16	. . . . . 6 ⊢ ((𝑃 ∈ ℤ ∧ ((2↑𝑃) − 1) ∈ ℙ) → ¬ ((2↑𝑃) − 1) ∥ (((2↑𝑃) − 1) + 1))
38		2z 12768	. . . . . . . . 9 ⊢ 2 ∈ ℤ
39	38	a1i 11	. . . . . . . 8 ⊢ ((𝑃 ∈ ℤ ∧ ((2↑𝑃) − 1) ∈ ℙ) → 2 ∈ ℤ)
40		dvdsmultr1 16510	. . . . . . . 8 ⊢ ((((2↑𝑃) − 1) ∈ ℤ ∧ (2↑(𝑃 − 1)) ∈ ℤ ∧ 2 ∈ ℤ) → (((2↑𝑃) − 1) ∥ (2↑(𝑃 − 1)) → ((2↑𝑃) − 1) ∥ ((2↑(𝑃 − 1)) · 2)))
41	27, 25, 39, 40	syl3anc 1399	. . . . . . 7 ⊢ ((𝑃 ∈ ℤ ∧ ((2↑𝑃) − 1) ∈ ℙ) → (((2↑𝑃) − 1) ∥ (2↑(𝑃 − 1)) → ((2↑𝑃) − 1) ∥ ((2↑(𝑃 − 1)) · 2)))
42		2cn 12458	. . . . . . . . . 10 ⊢ 2 ∈ ℂ
43		expm1t 14273	. . . . . . . . . 10 ⊢ ((2 ∈ ℂ ∧ 𝑃 ∈ ℕ) → (2↑𝑃) = ((2↑(𝑃 − 1)) · 2))
44	42, 3, 43	sylancr 599	. . . . . . . . 9 ⊢ ((𝑃 ∈ ℤ ∧ ((2↑𝑃) − 1) ∈ ℙ) → (2↑𝑃) = ((2↑(𝑃 − 1)) · 2))
45	15, 44	eqtr2d 2799	. . . . . . . 8 ⊢ ((𝑃 ∈ ℤ ∧ ((2↑𝑃) − 1) ∈ ℙ) → ((2↑(𝑃 − 1)) · 2) = (((2↑𝑃) − 1) + 1))
46	45	breq2d 5120	. . . . . . 7 ⊢ ((𝑃 ∈ ℤ ∧ ((2↑𝑃) − 1) ∈ ℙ) → (((2↑𝑃) − 1) ∥ ((2↑(𝑃 − 1)) · 2) ↔ ((2↑𝑃) − 1) ∥ (((2↑𝑃) − 1) + 1)))
47	41, 46	sylibd 242	. . . . . 6 ⊢ ((𝑃 ∈ ℤ ∧ ((2↑𝑃) − 1) ∈ ℙ) → (((2↑𝑃) − 1) ∥ (2↑(𝑃 − 1)) → ((2↑𝑃) − 1) ∥ (((2↑𝑃) − 1) + 1)))
48	37, 47	mtod 201	. . . . 5 ⊢ ((𝑃 ∈ ℤ ∧ ((2↑𝑃) − 1) ∈ ℙ) → ¬ ((2↑𝑃) − 1) ∥ (2↑(𝑃 − 1)))
49		simpr 490	. . . . . 6 ⊢ ((𝑃 ∈ ℤ ∧ ((2↑𝑃) − 1) ∈ ℙ) → ((2↑𝑃) − 1) ∈ ℙ)
50		coprm 16931	. . . . . 6 ⊢ ((((2↑𝑃) − 1) ∈ ℙ ∧ (2↑(𝑃 − 1)) ∈ ℤ) → (¬ ((2↑𝑃) − 1) ∥ (2↑(𝑃 − 1)) ↔ (((2↑𝑃) − 1) gcd (2↑(𝑃 − 1))) = 1))
51	49, 25, 50	syl2anc 596	. . . . 5 ⊢ ((𝑃 ∈ ℤ ∧ ((2↑𝑃) − 1) ∈ ℙ) → (¬ ((2↑𝑃) − 1) ∥ (2↑(𝑃 − 1)) ↔ (((2↑𝑃) − 1) gcd (2↑(𝑃 − 1))) = 1))
52	48, 51	mpbid 235	. . . 4 ⊢ ((𝑃 ∈ ℤ ∧ ((2↑𝑃) − 1) ∈ ℙ) → (((2↑𝑃) − 1) gcd (2↑(𝑃 − 1))) = 1)
53	28, 52	eqtrd 2798	. . 3 ⊢ ((𝑃 ∈ ℤ ∧ ((2↑𝑃) − 1) ∈ ℙ) → ((2↑(𝑃 − 1)) gcd ((2↑𝑃) − 1)) = 1)
54		sgmmul 27585	. . 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))))
55	18, 22, 24, 53, 54	syl13anc 1400	. 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))))
56		subcl 11595	. . . 4 ⊢ (((2↑𝑃) ∈ ℂ ∧ 1 ∈ ℂ) → ((2↑𝑃) − 1) ∈ ℂ)
57	12, 13, 56	sylancl 598	. . 3 ⊢ ((𝑃 ∈ ℤ ∧ ((2↑𝑃) − 1) ∈ ℙ) → ((2↑𝑃) − 1) ∈ ℂ)
58	12, 57	mulcomd 11369	. 2 ⊢ ((𝑃 ∈ ℤ ∧ ((2↑𝑃) − 1) ∈ ℙ) → ((2↑𝑃) · ((2↑𝑃) − 1)) = (((2↑𝑃) − 1) · (2↑𝑃)))
59	17, 55, 58	3eqtr4d 2808	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

This proof depends on syntax axioms: ¬ wn 3 → wi 4 ↔ wb 209 ∧ wa 401 = wceq 1570 ∈ wcel 2147 class class class wbr 5108 ‘cfv 6566 (class class class)co 7451 ℂcc 11237 1c1 11240 + caddc 11242 · cmul 11244 < clt 11382 − cmin 11580 ℕcn 12375 2c2 12437 ℕ₀cn0 12646 ℤcz 12733 ℤ_≥cuz 13005 ↑cexp 14244 ∥ cdvds 16466 gcd cgcd 16708 ℙcprime 16890 σ csgm 27480

This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1945 ax-6 2002 ax-7 2043 ax-8 2149 ax-9 2157 ax-10 2180 ax-11 2197 ax-12 2216 ax-ext 2735 ax-rep 5238 ax-sep 5255 ax-nul 5266 ax-pow 5334 ax-pr 5398 ax-un 7783 ax-inf2 9679 ax-cnex 11295 ax-resscn 11296 ax-1cn 11297 ax-icn 11298 ax-addcl 11299 ax-addrcl 11300 ax-mulcl 11301 ax-mulrcl 11302 ax-mulcom 11303 ax-addass 11304 ax-mulass 11305 ax-distr 11306 ax-i2m1 11307 ax-1ne0 11308 ax-1rid 11309 ax-rnegex 11310 ax-rrecex 11311 ax-cnre 11312 ax-pre-lttri 11313 ax-pre-lttrn 11314 ax-pre-ltadd 11315 ax-pre-mulgt0 11316 ax-pre-sup 11317 ax-addf 11318

This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3or 1104 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2102 df-mo 2567 df-eu 2597 df-clab 2742 df-cleq 2755 df-clel 2839 df-nfc 2913 df-ne 2960 df-nel 3066 df-ral 3081 df-rex 3091 df-rmo 3369 df-reu 3370 df-rab 3417 df-v 3456 df-sbc 3743 df-csb 3852 df-ss 3901 df-pss 4017 df-dif 4050 df-in 4094 df-un 4154 df-nul 4282 df-if 4486 df-pw 4562 df-sn 4589 df-pr 4591 df-tp 4593 df-op 4841 df-uni 4873 df-int 4913 df-iun 4958 df-iin 4959 df-br 5109 df-opab 5174 df-mpt 5193 df-tr 5219 df-id 5553 df-eprel 5558 df-po 5566 df-so 5567 df-fr 5611 df-se 5612 df-we 5613 df-xp 5664 df-rel 5665 df-cnv 5666 df-co 5667 df-dm 5668 df-rn 5669 df-res 5670 df-ima 5671 df-pred 6330 df-ord 6391 df-on 6392 df-lim 6393 df-suc 6394 df-iota 6520 df-fun 6568 df-fn 6569 df-f 6570 df-f1 6571 df-fo 6572 df-f1o 6573 df-fv 6574 df-isom 6575 df-riota 7408 df-ov 7454 df-oprab 7455 df-mpo 7456 df-of 7725 df-om 7912 df-1st 8035 df-2nd 8036 df-supp 8215 df-frecs 8337 df-wrecs 8368 df-recs 8417 df-rdg 8456 df-1o 8514 df-2o 8515 df-er 8755 df-map 8887 df-pm 8888 df-ixp 8964 df-en 9012 df-dom 9013 df-sdom 9014 df-fin 9015 df-fsupp 9392 df-fi 9440 df-sup 9471 df-inf 9472 df-oi 9541 df-card 10057 df-pnf 11384 df-mnf 11385 df-xr 11386 df-ltxr 11387 df-le 11388 df-sub 11582 df-neg 11583 df-div 12014 df-nn 12376 df-2 12445 df-3 12446 df-4 12447 df-5 12448 df-6 12449 df-7 12450 df-8 12451 df-9 12452 df-n0 12647 df-z 12734 df-dec 12855 df-uz 13006 df-q 13116 df-rp 13161 df-xneg 13281 df-xadd 13282 df-xmul 13283 df-ioo 13520 df-ioc 13521 df-ico 13522 df-icc 13523 df-fz 13680 df-fzo 13829 df-fl 13972 df-mod 14050 df-seq 14185 df-exp 14245 df-fac 14459 df-bc 14488 df-hash 14516 df-shft 15263 df-cj 15309 df-re 15310 df-im 15311 df-sqrt 15445 df-abs 15446 df-limsup 15682 df-clim 15699 df-rlim 15700 df-sum 15898 df-ef 16277 df-sin 16279 df-cos 16280 df-pi 16282 df-dvds 16467 df-gcd 16709 df-prm 16891 df-pc 17059 df-struct 17369 df-sets 17386 df-slot 17404 df-ndx 17416 df-base 17432 df-ress 17453 df-plusg 17486 df-mulr 17487 df-starv 17488 df-sca 17489 df-vsca 17490 df-ip 17491 df-tset 17492 df-ple 17493 df-ds 17495 df-unif 17496 df-hom 17497 df-cco 17498 df-euf 17499 df-rest 17643 df-topn 17644 df-0g 17662 df-gsum 17663 df-topgen 17664 df-pt 17665 df-prds 17668 df-xrs 17724 df-qtop 17729 df-imas 17730 df-xps 17732 df-mre 17806 df-mrc 17807 df-acs 17809 df-mgm 18866 df-sgrp 18958 df-mnd 18974 df-submnd 19029 df-mulg 19328 df-cntz 19582 df-cmn 20047 df-psmet 21721 df-xmet 21722 df-met 21723 df-bl 21724 df-mopn 21725 df-fbas 21726 df-fg 21727 df-cnfld 21730 df-top 23267 df-topon 23284 df-topsp 23306 df-bases 23319 df-cld 23392 df-ntr 23393 df-cls 23394 df-nei 23471 df-lp 23509 df-perf 23510 df-cn 23600 df-cnp 23601 df-haus 23688 df-tx 23936 df-hmeo 24129 df-fil 24220 df-fm 24312 df-flim 24313 df-flf 24314 df-xms 24694 df-ms 24695 df-tms 24696 df-cncf 25254 df-limc 26241 df-dv 26242 df-log 26941 df-cxp 26942 df-sgm 27486

This theorem is used by: perfect 27615 perfectALTV 49094

W3C validator