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Mirrors > Home > MPE Home > Th. List > Mathboxes > 4fppr1 | Structured version Visualization version GIF version |
Description: 4 is the (smallest) Fermat pseudoprime to the base 1. (Contributed by AV, 3-Jun-2023.) |
Ref | Expression |
---|---|
4fppr1 | ⊢ 4 ∈ ( FPPr ‘1) |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 4z 12593 | . . 3 ⊢ 4 ∈ ℤ | |
2 | uzid 12834 | . . 3 ⊢ (4 ∈ ℤ → 4 ∈ (ℤ≥‘4)) | |
3 | 1, 2 | ax-mp 5 | . 2 ⊢ 4 ∈ (ℤ≥‘4) |
4 | 4nprm 16629 | . . 3 ⊢ ¬ 4 ∈ ℙ | |
5 | 4 | nelir 3050 | . 2 ⊢ 4 ∉ ℙ |
6 | 4m1e3 12338 | . . . . . 6 ⊢ (4 − 1) = 3 | |
7 | 6 | oveq2i 7417 | . . . . 5 ⊢ (1↑(4 − 1)) = (1↑3) |
8 | 3z 12592 | . . . . . 6 ⊢ 3 ∈ ℤ | |
9 | 1exp 14054 | . . . . . 6 ⊢ (3 ∈ ℤ → (1↑3) = 1) | |
10 | 8, 9 | ax-mp 5 | . . . . 5 ⊢ (1↑3) = 1 |
11 | 7, 10 | eqtri 2761 | . . . 4 ⊢ (1↑(4 − 1)) = 1 |
12 | 11 | oveq1i 7416 | . . 3 ⊢ ((1↑(4 − 1)) mod 4) = (1 mod 4) |
13 | 4re 12293 | . . . 4 ⊢ 4 ∈ ℝ | |
14 | 1lt4 12385 | . . . 4 ⊢ 1 < 4 | |
15 | 1mod 13865 | . . . 4 ⊢ ((4 ∈ ℝ ∧ 1 < 4) → (1 mod 4) = 1) | |
16 | 13, 14, 15 | mp2an 691 | . . 3 ⊢ (1 mod 4) = 1 |
17 | 12, 16 | eqtri 2761 | . 2 ⊢ ((1↑(4 − 1)) mod 4) = 1 |
18 | 1nn 12220 | . . 3 ⊢ 1 ∈ ℕ | |
19 | fpprel 46383 | . . 3 ⊢ (1 ∈ ℕ → (4 ∈ ( FPPr ‘1) ↔ (4 ∈ (ℤ≥‘4) ∧ 4 ∉ ℙ ∧ ((1↑(4 − 1)) mod 4) = 1))) | |
20 | 18, 19 | ax-mp 5 | . 2 ⊢ (4 ∈ ( FPPr ‘1) ↔ (4 ∈ (ℤ≥‘4) ∧ 4 ∉ ℙ ∧ ((1↑(4 − 1)) mod 4) = 1)) |
21 | 3, 5, 17, 20 | mpbir3an 1342 | 1 ⊢ 4 ∈ ( FPPr ‘1) |
Colors of variables: wff setvar class |
Syntax hints: ↔ wb 205 ∧ w3a 1088 = wceq 1542 ∈ wcel 2107 ∉ wnel 3047 class class class wbr 5148 ‘cfv 6541 (class class class)co 7406 ℝcr 11106 1c1 11108 < clt 11245 − cmin 11441 ℕcn 12209 3c3 12265 4c4 12266 ℤcz 12555 ℤ≥cuz 12819 mod cmo 13831 ↑cexp 14024 ℙcprime 16605 FPPr cfppr 46379 |
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 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-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-2nd 7973 df-frecs 8263 df-wrecs 8294 df-recs 8368 df-rdg 8407 df-1o 8463 df-2o 8464 df-er 8700 df-en 8937 df-dom 8938 df-sdom 8939 df-fin 8940 df-sup 9434 df-inf 9435 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-4 12274 df-n0 12470 df-z 12556 df-uz 12820 df-rp 12972 df-fl 13754 df-mod 13832 df-seq 13964 df-exp 14025 df-cj 15043 df-re 15044 df-im 15045 df-sqrt 15179 df-abs 15180 df-dvds 16195 df-prm 16606 df-fppr 46380 |
This theorem is referenced by: (None) |
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