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Mathbox for Alexander van der Vekens |
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Mirrors > Home > MPE Home > Th. List > Mathboxes > fmtno2 | Structured version Visualization version GIF version |
Description: The 2 nd Fermat number, see remark in [ApostolNT] p. 7. (Contributed by AV, 13-Jun-2021.) |
Ref | Expression |
---|---|
fmtno2 | ⊢ (FermatNo‘2) = ;17 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 2nn0 12435 | . . 3 ⊢ 2 ∈ ℕ0 | |
2 | fmtno 45807 | . . 3 ⊢ (2 ∈ ℕ0 → (FermatNo‘2) = ((2↑(2↑2)) + 1)) | |
3 | 1, 2 | ax-mp 5 | . 2 ⊢ (FermatNo‘2) = ((2↑(2↑2)) + 1) |
4 | sq2 14107 | . . . . 5 ⊢ (2↑2) = 4 | |
5 | 4 | oveq2i 7369 | . . . 4 ⊢ (2↑(2↑2)) = (2↑4) |
6 | 5 | oveq1i 7368 | . . 3 ⊢ ((2↑(2↑2)) + 1) = ((2↑4) + 1) |
7 | 2exp4 16962 | . . . 4 ⊢ (2↑4) = ;16 | |
8 | 7 | oveq1i 7368 | . . 3 ⊢ ((2↑4) + 1) = (;16 + 1) |
9 | 1nn0 12434 | . . . 4 ⊢ 1 ∈ ℕ0 | |
10 | 6nn0 12439 | . . . 4 ⊢ 6 ∈ ℕ0 | |
11 | 6p1e7 12306 | . . . 4 ⊢ (6 + 1) = 7 | |
12 | eqid 2733 | . . . 4 ⊢ ;16 = ;16 | |
13 | 9, 10, 11, 12 | decsuc 12654 | . . 3 ⊢ (;16 + 1) = ;17 |
14 | 6, 8, 13 | 3eqtri 2765 | . 2 ⊢ ((2↑(2↑2)) + 1) = ;17 |
15 | 3, 14 | eqtri 2761 | 1 ⊢ (FermatNo‘2) = ;17 |
Colors of variables: wff setvar class |
Syntax hints: = wceq 1542 ∈ wcel 2107 ‘cfv 6497 (class class class)co 7358 1c1 11057 + caddc 11059 2c2 12213 4c4 12215 6c6 12217 7c7 12218 ℕ0cn0 12418 ;cdc 12623 ↑cexp 13973 FermatNocfmtno 45805 |
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-sep 5257 ax-nul 5264 ax-pow 5321 ax-pr 5385 ax-un 7673 ax-cnex 11112 ax-resscn 11113 ax-1cn 11114 ax-icn 11115 ax-addcl 11116 ax-addrcl 11117 ax-mulcl 11118 ax-mulrcl 11119 ax-mulcom 11120 ax-addass 11121 ax-mulass 11122 ax-distr 11123 ax-i2m1 11124 ax-1ne0 11125 ax-1rid 11126 ax-rnegex 11127 ax-rrecex 11128 ax-cnre 11129 ax-pre-lttri 11130 ax-pre-lttrn 11131 ax-pre-ltadd 11132 ax-pre-mulgt0 11133 |
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 2941 df-nel 3047 df-ral 3062 df-rex 3071 df-reu 3353 df-rab 3407 df-v 3446 df-sbc 3741 df-csb 3857 df-dif 3914 df-un 3916 df-in 3918 df-ss 3928 df-pss 3930 df-nul 4284 df-if 4488 df-pw 4563 df-sn 4588 df-pr 4590 df-op 4594 df-uni 4867 df-iun 4957 df-br 5107 df-opab 5169 df-mpt 5190 df-tr 5224 df-id 5532 df-eprel 5538 df-po 5546 df-so 5547 df-fr 5589 df-we 5591 df-xp 5640 df-rel 5641 df-cnv 5642 df-co 5643 df-dm 5644 df-rn 5645 df-res 5646 df-ima 5647 df-pred 6254 df-ord 6321 df-on 6322 df-lim 6323 df-suc 6324 df-iota 6449 df-fun 6499 df-fn 6500 df-f 6501 df-f1 6502 df-fo 6503 df-f1o 6504 df-fv 6505 df-riota 7314 df-ov 7361 df-oprab 7362 df-mpo 7363 df-om 7804 df-2nd 7923 df-frecs 8213 df-wrecs 8244 df-recs 8318 df-rdg 8357 df-er 8651 df-en 8887 df-dom 8888 df-sdom 8889 df-pnf 11196 df-mnf 11197 df-xr 11198 df-ltxr 11199 df-le 11200 df-sub 11392 df-neg 11393 df-nn 12159 df-2 12221 df-3 12222 df-4 12223 df-5 12224 df-6 12225 df-7 12226 df-8 12227 df-9 12228 df-n0 12419 df-z 12505 df-dec 12624 df-uz 12769 df-seq 13913 df-exp 13974 df-fmtno 45806 |
This theorem is referenced by: fmtno2prm 45838 |
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