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Mirrors > Home > MPE Home > Th. List > Mathboxes > 8exp8mod9 | Structured version Visualization version GIF version |
Description: Eight to the eighth power modulo nine is one. (Contributed by AV, 2-Jun-2023.) |
Ref | Expression |
---|---|
8exp8mod9 | ⊢ ((8↑8) mod 9) = 1 |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | 9nn 11736 | . . 3 ⊢ 9 ∈ ℕ | |
2 | 8nn 11733 | . . 3 ⊢ 8 ∈ ℕ | |
3 | 4nn0 11917 | . . 3 ⊢ 4 ∈ ℕ0 | |
4 | 0z 11993 | . . 3 ⊢ 0 ∈ ℤ | |
5 | 1nn0 11914 | . . 3 ⊢ 1 ∈ ℕ0 | |
6 | 2nn0 11915 | . . . 4 ⊢ 2 ∈ ℕ0 | |
7 | 7nn 11730 | . . . . . 6 ⊢ 7 ∈ ℕ | |
8 | 7 | nnzi 12007 | . . . . 5 ⊢ 7 ∈ ℤ |
9 | 8nn0 11921 | . . . . 5 ⊢ 8 ∈ ℕ0 | |
10 | 8cn 11735 | . . . . . . 7 ⊢ 8 ∈ ℂ | |
11 | exp1 13436 | . . . . . . 7 ⊢ (8 ∈ ℂ → (8↑1) = 8) | |
12 | 10, 11 | ax-mp 5 | . . . . . 6 ⊢ (8↑1) = 8 |
13 | 12 | oveq1i 7166 | . . . . 5 ⊢ ((8↑1) mod 9) = (8 mod 9) |
14 | 2t1e2 11801 | . . . . 5 ⊢ (2 · 1) = 2 | |
15 | 6nn0 11919 | . . . . . . 7 ⊢ 6 ∈ ℕ0 | |
16 | 3nn0 11916 | . . . . . . 7 ⊢ 3 ∈ ℕ0 | |
17 | 3p1e4 11783 | . . . . . . 7 ⊢ (3 + 1) = 4 | |
18 | eqid 2821 | . . . . . . 7 ⊢ ;63 = ;63 | |
19 | 15, 16, 17, 18 | decsuc 12130 | . . . . . 6 ⊢ (;63 + 1) = ;64 |
20 | 9cn 11738 | . . . . . . . 8 ⊢ 9 ∈ ℂ | |
21 | 7cn 11732 | . . . . . . . 8 ⊢ 7 ∈ ℂ | |
22 | 9t7e63 12226 | . . . . . . . 8 ⊢ (9 · 7) = ;63 | |
23 | 20, 21, 22 | mulcomli 10650 | . . . . . . 7 ⊢ (7 · 9) = ;63 |
24 | 23 | oveq1i 7166 | . . . . . 6 ⊢ ((7 · 9) + 1) = (;63 + 1) |
25 | 8t8e64 12220 | . . . . . 6 ⊢ (8 · 8) = ;64 | |
26 | 19, 24, 25 | 3eqtr4i 2854 | . . . . 5 ⊢ ((7 · 9) + 1) = (8 · 8) |
27 | 1, 2, 5, 8, 9, 5, 13, 14, 26 | mod2xi 16405 | . . . 4 ⊢ ((8↑2) mod 9) = (1 mod 9) |
28 | 2t2e4 11802 | . . . 4 ⊢ (2 · 2) = 4 | |
29 | 0p1e1 11760 | . . . . 5 ⊢ (0 + 1) = 1 | |
30 | 20 | mul02i 10829 | . . . . . 6 ⊢ (0 · 9) = 0 |
31 | 30 | oveq1i 7166 | . . . . 5 ⊢ ((0 · 9) + 1) = (0 + 1) |
32 | 1t1e1 11800 | . . . . 5 ⊢ (1 · 1) = 1 | |
33 | 29, 31, 32 | 3eqtr4i 2854 | . . . 4 ⊢ ((0 · 9) + 1) = (1 · 1) |
34 | 1, 2, 6, 4, 5, 5, 27, 28, 33 | mod2xi 16405 | . . 3 ⊢ ((8↑4) mod 9) = (1 mod 9) |
35 | 4cn 11723 | . . . 4 ⊢ 4 ∈ ℂ | |
36 | 2cn 11713 | . . . 4 ⊢ 2 ∈ ℂ | |
37 | 4t2e8 11806 | . . . 4 ⊢ (4 · 2) = 8 | |
38 | 35, 36, 37 | mulcomli 10650 | . . 3 ⊢ (2 · 4) = 8 |
39 | 1, 2, 3, 4, 5, 5, 34, 38, 33 | mod2xi 16405 | . 2 ⊢ ((8↑8) mod 9) = (1 mod 9) |
40 | 1re 10641 | . . 3 ⊢ 1 ∈ ℝ | |
41 | nnrp 12401 | . . . 4 ⊢ (9 ∈ ℕ → 9 ∈ ℝ+) | |
42 | 1, 41 | ax-mp 5 | . . 3 ⊢ 9 ∈ ℝ+ |
43 | 0le1 11163 | . . 3 ⊢ 0 ≤ 1 | |
44 | 1lt9 11844 | . . 3 ⊢ 1 < 9 | |
45 | modid 13265 | . . 3 ⊢ (((1 ∈ ℝ ∧ 9 ∈ ℝ+) ∧ (0 ≤ 1 ∧ 1 < 9)) → (1 mod 9) = 1) | |
46 | 40, 42, 43, 44, 45 | mp4an 691 | . 2 ⊢ (1 mod 9) = 1 |
47 | 39, 46 | eqtri 2844 | 1 ⊢ ((8↑8) mod 9) = 1 |
Colors of variables: wff setvar class |
Syntax hints: = wceq 1537 ∈ wcel 2114 class class class wbr 5066 (class class class)co 7156 ℂcc 10535 ℝcr 10536 0cc0 10537 1c1 10538 + caddc 10540 · cmul 10542 < clt 10675 ≤ cle 10676 ℕcn 11638 2c2 11693 3c3 11694 4c4 11695 6c6 11697 7c7 11698 8c8 11699 9c9 11700 ;cdc 12099 ℝ+crp 12390 mod cmo 13238 ↑cexp 13430 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1796 ax-4 1810 ax-5 1911 ax-6 1970 ax-7 2015 ax-8 2116 ax-9 2124 ax-10 2145 ax-11 2161 ax-12 2177 ax-ext 2793 ax-sep 5203 ax-nul 5210 ax-pow 5266 ax-pr 5330 ax-un 7461 ax-cnex 10593 ax-resscn 10594 ax-1cn 10595 ax-icn 10596 ax-addcl 10597 ax-addrcl 10598 ax-mulcl 10599 ax-mulrcl 10600 ax-mulcom 10601 ax-addass 10602 ax-mulass 10603 ax-distr 10604 ax-i2m1 10605 ax-1ne0 10606 ax-1rid 10607 ax-rnegex 10608 ax-rrecex 10609 ax-cnre 10610 ax-pre-lttri 10611 ax-pre-lttrn 10612 ax-pre-ltadd 10613 ax-pre-mulgt0 10614 ax-pre-sup 10615 |
This theorem depends on definitions: df-bi 209 df-an 399 df-or 844 df-3or 1084 df-3an 1085 df-tru 1540 df-ex 1781 df-nf 1785 df-sb 2070 df-mo 2622 df-eu 2654 df-clab 2800 df-cleq 2814 df-clel 2893 df-nfc 2963 df-ne 3017 df-nel 3124 df-ral 3143 df-rex 3144 df-reu 3145 df-rmo 3146 df-rab 3147 df-v 3496 df-sbc 3773 df-csb 3884 df-dif 3939 df-un 3941 df-in 3943 df-ss 3952 df-pss 3954 df-nul 4292 df-if 4468 df-pw 4541 df-sn 4568 df-pr 4570 df-tp 4572 df-op 4574 df-uni 4839 df-iun 4921 df-br 5067 df-opab 5129 df-mpt 5147 df-tr 5173 df-id 5460 df-eprel 5465 df-po 5474 df-so 5475 df-fr 5514 df-we 5516 df-xp 5561 df-rel 5562 df-cnv 5563 df-co 5564 df-dm 5565 df-rn 5566 df-res 5567 df-ima 5568 df-pred 6148 df-ord 6194 df-on 6195 df-lim 6196 df-suc 6197 df-iota 6314 df-fun 6357 df-fn 6358 df-f 6359 df-f1 6360 df-fo 6361 df-f1o 6362 df-fv 6363 df-riota 7114 df-ov 7159 df-oprab 7160 df-mpo 7161 df-om 7581 df-2nd 7690 df-wrecs 7947 df-recs 8008 df-rdg 8046 df-er 8289 df-en 8510 df-dom 8511 df-sdom 8512 df-sup 8906 df-inf 8907 df-pnf 10677 df-mnf 10678 df-xr 10679 df-ltxr 10680 df-le 10681 df-sub 10872 df-neg 10873 df-div 11298 df-nn 11639 df-2 11701 df-3 11702 df-4 11703 df-5 11704 df-6 11705 df-7 11706 df-8 11707 df-9 11708 df-n0 11899 df-z 11983 df-dec 12100 df-uz 12245 df-rp 12391 df-fl 13163 df-mod 13239 df-seq 13371 df-exp 13431 |
This theorem is referenced by: 9fppr8 43951 nfermltl8rev 43956 |
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