| Step | Hyp | Ref
| Expression |
| 1 | | prmlem2.n |
. 2
⊢ 𝑁 ∈ ℕ |
| 2 | | prmlem2.gt |
. 2
⊢ 1 <
𝑁 |
| 3 | | prmlem2.2 |
. 2
⊢ ¬ 2
∥ 𝑁 |
| 4 | | prmlem2.3 |
. 2
⊢ ¬ 3
∥ 𝑁 |
| 5 | | eluzelre 9941 |
. . . . . . . . . . . . . . . . . . . 20
⊢ (𝑥 ∈
(ℤ≥‘;29)
→ 𝑥 ∈
ℝ) |
| 6 | 5 | resqcld 11150 |
. . . . . . . . . . . . . . . . . . 19
⊢ (𝑥 ∈
(ℤ≥‘;29)
→ (𝑥↑2) ∈
ℝ) |
| 7 | | eluzle 9943 |
. . . . . . . . . . . . . . . . . . . 20
⊢ (𝑥 ∈
(ℤ≥‘;29)
→ ;29 ≤ 𝑥) |
| 8 | | 2nn0 9584 |
. . . . . . . . . . . . . . . . . . . . . . 23
⊢ 2 ∈
ℕ0 |
| 9 | | 9nn0 9591 |
. . . . . . . . . . . . . . . . . . . . . . 23
⊢ 9 ∈
ℕ0 |
| 10 | 8, 9 | deccl 9795 |
. . . . . . . . . . . . . . . . . . . . . 22
⊢ ;29 ∈
ℕ0 |
| 11 | 10 | nn0rei 9578 |
. . . . . . . . . . . . . . . . . . . . 21
⊢ ;29 ∈ ℝ |
| 12 | 10 | nn0ge0i 9594 |
. . . . . . . . . . . . . . . . . . . . 21
⊢ 0 ≤
;29 |
| 13 | | le2sq2 11065 |
. . . . . . . . . . . . . . . . . . . . 21
⊢ (((;29 ∈ ℝ ∧ 0 ≤ ;29) ∧ (𝑥 ∈ ℝ ∧ ;29 ≤ 𝑥)) → (;29↑2) ≤ (𝑥↑2)) |
| 14 | 11, 12, 13 | mpanl12 440 |
. . . . . . . . . . . . . . . . . . . 20
⊢ ((𝑥 ∈ ℝ ∧ ;29 ≤ 𝑥) → (;29↑2) ≤ (𝑥↑2)) |
| 15 | 5, 7, 14 | syl2anc 415 |
. . . . . . . . . . . . . . . . . . 19
⊢ (𝑥 ∈
(ℤ≥‘;29)
→ (;29↑2) ≤ (𝑥↑2)) |
| 16 | 1 | nnrei 9315 |
. . . . . . . . . . . . . . . . . . . 20
⊢ 𝑁 ∈ ℝ |
| 17 | 11 | resqcli 11074 |
. . . . . . . . . . . . . . . . . . . 20
⊢ (;29↑2) ∈
ℝ |
| 18 | | prmlem2.lt |
. . . . . . . . . . . . . . . . . . . . . 22
⊢ 𝑁 < ;;841 |
| 19 | 10 | nn0cni 9579 |
. . . . . . . . . . . . . . . . . . . . . . . 24
⊢ ;29 ∈ ℂ |
| 20 | 19 | sqvali 11069 |
. . . . . . . . . . . . . . . . . . . . . . 23
⊢ (;29↑2) = (;29 · ;29) |
| 21 | | eqid 2238 |
. . . . . . . . . . . . . . . . . . . . . . . 24
⊢ ;29 = ;29 |
| 22 | | 1nn0 9583 |
. . . . . . . . . . . . . . . . . . . . . . . 24
⊢ 1 ∈
ℕ0 |
| 23 | | 6nn0 9588 |
. . . . . . . . . . . . . . . . . . . . . . . . 25
⊢ 6 ∈
ℕ0 |
| 24 | 8, 23 | deccl 9795 |
. . . . . . . . . . . . . . . . . . . . . . . 24
⊢ ;26 ∈
ℕ0 |
| 25 | | 5nn0 9587 |
. . . . . . . . . . . . . . . . . . . . . . . . 25
⊢ 5 ∈
ℕ0 |
| 26 | | 8nn0 9590 |
. . . . . . . . . . . . . . . . . . . . . . . . 25
⊢ 8 ∈
ℕ0 |
| 27 | 19 | 2timesi 9436 |
. . . . . . . . . . . . . . . . . . . . . . . . . 26
⊢ (2
· ;29) = (;29 + ;29) |
| 28 | | 2p2e4 9433 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
⊢ (2 + 2) =
4 |
| 29 | 28 | oveq1i 6095 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . 28
⊢ ((2 + 2)
+ 1) = (4 + 1) |
| 30 | | 4p1e5 9443 |
. . . . . . . . . . . . . . . . . . . . . . . . . . . 28
⊢ (4 + 1) =
5 |
| 31 | 29, 30 | eqtri 2259 |
. . . . . . . . . . . . . . . . . . . . . . . . . . 27
⊢ ((2 + 2)
+ 1) = 5 |
| 32 | | 9p9e18 9879 |
. . . . . . . . . . . . . . . . . . . . . . . . . . 27
⊢ (9 + 9) =
;18 |
| 33 | 8, 9, 8, 9, 21, 21, 31, 26, 32 | decaddc 9840 |
. . . . . . . . . . . . . . . . . . . . . . . . . 26
⊢ (;29 + ;29) = ;58 |
| 34 | 27, 33 | eqtri 2259 |
. . . . . . . . . . . . . . . . . . . . . . . . 25
⊢ (2
· ;29) = ;58 |
| 35 | | eqid 2238 |
. . . . . . . . . . . . . . . . . . . . . . . . 25
⊢ ;26 = ;26 |
| 36 | | 5p2e7 9453 |
. . . . . . . . . . . . . . . . . . . . . . . . . . 27
⊢ (5 + 2) =
7 |
| 37 | 36 | oveq1i 6095 |
. . . . . . . . . . . . . . . . . . . . . . . . . 26
⊢ ((5 + 2)
+ 1) = (7 + 1) |
| 38 | | 7p1e8 9446 |
. . . . . . . . . . . . . . . . . . . . . . . . . 26
⊢ (7 + 1) =
8 |
| 39 | 37, 38 | eqtri 2259 |
. . . . . . . . . . . . . . . . . . . . . . . . 25
⊢ ((5 + 2)
+ 1) = 8 |
| 40 | | 4nn0 9586 |
. . . . . . . . . . . . . . . . . . . . . . . . 25
⊢ 4 ∈
ℕ0 |
| 41 | | 8p6e14 9869 |
. . . . . . . . . . . . . . . . . . . . . . . . 25
⊢ (8 + 6) =
;14 |
| 42 | 25, 26, 8, 23, 34, 35, 39, 40, 41 | decaddc 9840 |
. . . . . . . . . . . . . . . . . . . . . . . 24
⊢ ((2
· ;29) + ;26) = ;84 |
| 43 | | 9t2e18 9907 |
. . . . . . . . . . . . . . . . . . . . . . . . . 26
⊢ (9
· 2) = ;18 |
| 44 | | 1p1e2 9423 |
. . . . . . . . . . . . . . . . . . . . . . . . . 26
⊢ (1 + 1) =
2 |
| 45 | | 8p8e16 9871 |
. . . . . . . . . . . . . . . . . . . . . . . . . 26
⊢ (8 + 8) =
;16 |
| 46 | 22, 26, 26, 43, 44, 23, 45 | decaddci 9846 |
. . . . . . . . . . . . . . . . . . . . . . . . 25
⊢ ((9
· 2) + 8) = ;26 |
| 47 | | 9t9e81 9914 |
. . . . . . . . . . . . . . . . . . . . . . . . 25
⊢ (9
· 9) = ;81 |
| 48 | 9, 8, 9, 21, 22, 26, 46, 47 | decmul2c 9851 |
. . . . . . . . . . . . . . . . . . . . . . . 24
⊢ (9
· ;29) = ;;261 |
| 49 | 10, 8, 9, 21, 22, 24, 42, 48 | decmul1c 9850 |
. . . . . . . . . . . . . . . . . . . . . . 23
⊢ (;29 · ;29) = ;;841 |
| 50 | 20, 49 | eqtri 2259 |
. . . . . . . . . . . . . . . . . . . . . 22
⊢ (;29↑2) = ;;841 |
| 51 | 18, 50 | breqtrri 4157 |
. . . . . . . . . . . . . . . . . . . . 21
⊢ 𝑁 < (;29↑2) |
| 52 | | ltletr 8415 |
. . . . . . . . . . . . . . . . . . . . 21
⊢ ((𝑁 ∈ ℝ ∧ (;29↑2) ∈ ℝ ∧ (𝑥↑2) ∈ ℝ) →
((𝑁 < (;29↑2) ∧ (;29↑2) ≤ (𝑥↑2)) → 𝑁 < (𝑥↑2))) |
| 53 | 51, 52 | mpani 434 |
. . . . . . . . . . . . . . . . . . . 20
⊢ ((𝑁 ∈ ℝ ∧ (;29↑2) ∈ ℝ ∧ (𝑥↑2) ∈ ℝ) →
((;29↑2) ≤ (𝑥↑2) → 𝑁 < (𝑥↑2))) |
| 54 | 16, 17, 53 | mp3an12 1368 |
. . . . . . . . . . . . . . . . . . 19
⊢ ((𝑥↑2) ∈ ℝ →
((;29↑2) ≤ (𝑥↑2) → 𝑁 < (𝑥↑2))) |
| 55 | 6, 15, 54 | sylc 62 |
. . . . . . . . . . . . . . . . . 18
⊢ (𝑥 ∈
(ℤ≥‘;29)
→ 𝑁 < (𝑥↑2)) |
| 56 | 1 | nnzi 9669 |
. . . . . . . . . . . . . . . . . . 19
⊢ 𝑁 ∈ ℤ |
| 57 | | eluzelz 9940 |
. . . . . . . . . . . . . . . . . . . 20
⊢ (𝑥 ∈
(ℤ≥‘;29)
→ 𝑥 ∈
ℤ) |
| 58 | | zsqcl 11060 |
. . . . . . . . . . . . . . . . . . . 20
⊢ (𝑥 ∈ ℤ → (𝑥↑2) ∈
ℤ) |
| 59 | 57, 58 | syl 14 |
. . . . . . . . . . . . . . . . . . 19
⊢ (𝑥 ∈
(ℤ≥‘;29)
→ (𝑥↑2) ∈
ℤ) |
| 60 | | zltnle 9694 |
. . . . . . . . . . . . . . . . . . 19
⊢ ((𝑁 ∈ ℤ ∧ (𝑥↑2) ∈ ℤ) →
(𝑁 < (𝑥↑2) ↔ ¬ (𝑥↑2) ≤ 𝑁)) |
| 61 | 56, 59, 60 | sylancr 418 |
. . . . . . . . . . . . . . . . . 18
⊢ (𝑥 ∈
(ℤ≥‘;29)
→ (𝑁 < (𝑥↑2) ↔ ¬ (𝑥↑2) ≤ 𝑁)) |
| 62 | 55, 61 | mpbid 147 |
. . . . . . . . . . . . . . . . 17
⊢ (𝑥 ∈
(ℤ≥‘;29)
→ ¬ (𝑥↑2)
≤ 𝑁) |
| 63 | 62 | pm2.21d 628 |
. . . . . . . . . . . . . . . 16
⊢ (𝑥 ∈
(ℤ≥‘;29)
→ ((𝑥↑2) ≤
𝑁 → ¬ 𝑥 ∥ 𝑁)) |
| 64 | 63 | adantld 278 |
. . . . . . . . . . . . . . 15
⊢ (𝑥 ∈
(ℤ≥‘;29)
→ ((𝑥 ∈ (ℙ
∖ {2}) ∧ (𝑥↑2) ≤ 𝑁) → ¬ 𝑥 ∥ 𝑁)) |
| 65 | 64 | adantl 277 |
. . . . . . . . . . . . . 14
⊢ ((¬ 2
∥ ;29 ∧ 𝑥 ∈
(ℤ≥‘;29)) → ((𝑥 ∈ (ℙ ∖ {2}) ∧ (𝑥↑2) ≤ 𝑁) → ¬ 𝑥 ∥ 𝑁)) |
| 66 | | 9nn 9477 |
. . . . . . . . . . . . . . . 16
⊢ 9 ∈
ℕ |
| 67 | | 3nn 9471 |
. . . . . . . . . . . . . . . 16
⊢ 3 ∈
ℕ |
| 68 | | 1lt9 9513 |
. . . . . . . . . . . . . . . 16
⊢ 1 <
9 |
| 69 | | 1lt3 9480 |
. . . . . . . . . . . . . . . 16
⊢ 1 <
3 |
| 70 | | 9t3e27 9908 |
. . . . . . . . . . . . . . . 16
⊢ (9
· 3) = ;27 |
| 71 | 66, 67, 68, 69, 70 | nprmi 12918 |
. . . . . . . . . . . . . . 15
⊢ ¬
;27 ∈
ℙ |
| 72 | 71 | pm2.21i 655 |
. . . . . . . . . . . . . 14
⊢ (;27 ∈ ℙ → ¬ ;27 ∥ 𝑁) |
| 73 | | 7nn0 9589 |
. . . . . . . . . . . . . . 15
⊢ 7 ∈
ℕ0 |
| 74 | | eqid 2238 |
. . . . . . . . . . . . . . 15
⊢ ;27 = ;27 |
| 75 | | 7p2e9 9458 |
. . . . . . . . . . . . . . 15
⊢ (7 + 2) =
9 |
| 76 | 8, 73, 8, 74, 75 | decaddi 9845 |
. . . . . . . . . . . . . 14
⊢ (;27 + 2) = ;29 |
| 77 | 65, 72, 76 | prmlem0 13240 |
. . . . . . . . . . . . 13
⊢ ((¬ 2
∥ ;27 ∧ 𝑥 ∈
(ℤ≥‘;27)) → ((𝑥 ∈ (ℙ ∖ {2}) ∧ (𝑥↑2) ≤ 𝑁) → ¬ 𝑥 ∥ 𝑁)) |
| 78 | | 5nn 9473 |
. . . . . . . . . . . . . . 15
⊢ 5 ∈
ℕ |
| 79 | | 1lt5 9487 |
. . . . . . . . . . . . . . 15
⊢ 1 <
5 |
| 80 | | 5t5e25 9888 |
. . . . . . . . . . . . . . 15
⊢ (5
· 5) = ;25 |
| 81 | 78, 78, 79, 79, 80 | nprmi 12918 |
. . . . . . . . . . . . . 14
⊢ ¬
;25 ∈
ℙ |
| 82 | 81 | pm2.21i 655 |
. . . . . . . . . . . . 13
⊢ (;25 ∈ ℙ → ¬ ;25 ∥ 𝑁) |
| 83 | | eqid 2238 |
. . . . . . . . . . . . . 14
⊢ ;25 = ;25 |
| 84 | 8, 25, 8, 83, 36 | decaddi 9845 |
. . . . . . . . . . . . 13
⊢ (;25 + 2) = ;27 |
| 85 | 77, 82, 84 | prmlem0 13240 |
. . . . . . . . . . . 12
⊢ ((¬ 2
∥ ;25 ∧ 𝑥 ∈
(ℤ≥‘;25)) → ((𝑥 ∈ (ℙ ∖ {2}) ∧ (𝑥↑2) ≤ 𝑁) → ¬ 𝑥 ∥ 𝑁)) |
| 86 | | prmlem2.23 |
. . . . . . . . . . . . 13
⊢ ¬
;23 ∥ 𝑁 |
| 87 | 86 | a1i 9 |
. . . . . . . . . . . 12
⊢ (;23 ∈ ℙ → ¬ ;23 ∥ 𝑁) |
| 88 | | 3nn0 9585 |
. . . . . . . . . . . . 13
⊢ 3 ∈
ℕ0 |
| 89 | | eqid 2238 |
. . . . . . . . . . . . 13
⊢ ;23 = ;23 |
| 90 | | 3p2e5 9448 |
. . . . . . . . . . . . 13
⊢ (3 + 2) =
5 |
| 91 | 8, 88, 8, 89, 90 | decaddi 9845 |
. . . . . . . . . . . 12
⊢ (;23 + 2) = ;25 |
| 92 | 85, 87, 91 | prmlem0 13240 |
. . . . . . . . . . 11
⊢ ((¬ 2
∥ ;23 ∧ 𝑥 ∈
(ℤ≥‘;23)) → ((𝑥 ∈ (ℙ ∖ {2}) ∧ (𝑥↑2) ≤ 𝑁) → ¬ 𝑥 ∥ 𝑁)) |
| 93 | | 7nn 9475 |
. . . . . . . . . . . . 13
⊢ 7 ∈
ℕ |
| 94 | | 1lt7 9498 |
. . . . . . . . . . . . 13
⊢ 1 <
7 |
| 95 | | 7t3e21 9895 |
. . . . . . . . . . . . 13
⊢ (7
· 3) = ;21 |
| 96 | 93, 67, 94, 69, 95 | nprmi 12918 |
. . . . . . . . . . . 12
⊢ ¬
;21 ∈
ℙ |
| 97 | 96 | pm2.21i 655 |
. . . . . . . . . . 11
⊢ (;21 ∈ ℙ → ¬ ;21 ∥ 𝑁) |
| 98 | | eqid 2238 |
. . . . . . . . . . . 12
⊢ ;21 = ;21 |
| 99 | | 1p2e3 9441 |
. . . . . . . . . . . 12
⊢ (1 + 2) =
3 |
| 100 | 8, 22, 8, 98, 99 | decaddi 9845 |
. . . . . . . . . . 11
⊢ (;21 + 2) = ;23 |
| 101 | 92, 97, 100 | prmlem0 13240 |
. . . . . . . . . 10
⊢ ((¬ 2
∥ ;21 ∧ 𝑥 ∈
(ℤ≥‘;21)) → ((𝑥 ∈ (ℙ ∖ {2}) ∧ (𝑥↑2) ≤ 𝑁) → ¬ 𝑥 ∥ 𝑁)) |
| 102 | | prmlem2.19 |
. . . . . . . . . . 11
⊢ ¬
;19 ∥ 𝑁 |
| 103 | 102 | a1i 9 |
. . . . . . . . . 10
⊢ (;19 ∈ ℙ → ¬ ;19 ∥ 𝑁) |
| 104 | | eqid 2238 |
. . . . . . . . . . 11
⊢ ;19 = ;19 |
| 105 | | 9p2e11 9872 |
. . . . . . . . . . 11
⊢ (9 + 2) =
;11 |
| 106 | 22, 9, 8, 104, 44, 22, 105 | decaddci 9846 |
. . . . . . . . . 10
⊢ (;19 + 2) = ;21 |
| 107 | 101, 103,
106 | prmlem0 13240 |
. . . . . . . . 9
⊢ ((¬ 2
∥ ;19 ∧ 𝑥 ∈
(ℤ≥‘;19)) → ((𝑥 ∈ (ℙ ∖ {2}) ∧ (𝑥↑2) ≤ 𝑁) → ¬ 𝑥 ∥ 𝑁)) |
| 108 | | prmlem2.17 |
. . . . . . . . . 10
⊢ ¬
;17 ∥ 𝑁 |
| 109 | 108 | a1i 9 |
. . . . . . . . 9
⊢ (;17 ∈ ℙ → ¬ ;17 ∥ 𝑁) |
| 110 | | eqid 2238 |
. . . . . . . . . 10
⊢ ;17 = ;17 |
| 111 | 22, 73, 8, 110, 75 | decaddi 9845 |
. . . . . . . . 9
⊢ (;17 + 2) = ;19 |
| 112 | 107, 109,
111 | prmlem0 13240 |
. . . . . . . 8
⊢ ((¬ 2
∥ ;17 ∧ 𝑥 ∈
(ℤ≥‘;17)) → ((𝑥 ∈ (ℙ ∖ {2}) ∧ (𝑥↑2) ≤ 𝑁) → ¬ 𝑥 ∥ 𝑁)) |
| 113 | | 5t3e15 9886 |
. . . . . . . . . 10
⊢ (5
· 3) = ;15 |
| 114 | 78, 67, 79, 69, 113 | nprmi 12918 |
. . . . . . . . 9
⊢ ¬
;15 ∈
ℙ |
| 115 | 114 | pm2.21i 655 |
. . . . . . . 8
⊢ (;15 ∈ ℙ → ¬ ;15 ∥ 𝑁) |
| 116 | | eqid 2238 |
. . . . . . . . 9
⊢ ;15 = ;15 |
| 117 | 22, 25, 8, 116, 36 | decaddi 9845 |
. . . . . . . 8
⊢ (;15 + 2) = ;17 |
| 118 | 112, 115,
117 | prmlem0 13240 |
. . . . . . 7
⊢ ((¬ 2
∥ ;15 ∧ 𝑥 ∈
(ℤ≥‘;15)) → ((𝑥 ∈ (ℙ ∖ {2}) ∧ (𝑥↑2) ≤ 𝑁) → ¬ 𝑥 ∥ 𝑁)) |
| 119 | | prmlem2.13 |
. . . . . . . 8
⊢ ¬
;13 ∥ 𝑁 |
| 120 | 119 | a1i 9 |
. . . . . . 7
⊢ (;13 ∈ ℙ → ¬ ;13 ∥ 𝑁) |
| 121 | | eqid 2238 |
. . . . . . . 8
⊢ ;13 = ;13 |
| 122 | 22, 88, 8, 121, 90 | decaddi 9845 |
. . . . . . 7
⊢ (;13 + 2) = ;15 |
| 123 | 118, 120,
122 | prmlem0 13240 |
. . . . . 6
⊢ ((¬ 2
∥ ;13 ∧ 𝑥 ∈
(ℤ≥‘;13)) → ((𝑥 ∈ (ℙ ∖ {2}) ∧ (𝑥↑2) ≤ 𝑁) → ¬ 𝑥 ∥ 𝑁)) |
| 124 | | prmlem2.11 |
. . . . . . 7
⊢ ¬
;11 ∥ 𝑁 |
| 125 | 124 | a1i 9 |
. . . . . 6
⊢ (;11 ∈ ℙ → ¬ ;11 ∥ 𝑁) |
| 126 | | eqid 2238 |
. . . . . . 7
⊢ ;11 = ;11 |
| 127 | 22, 22, 8, 126, 99 | decaddi 9845 |
. . . . . 6
⊢ (;11 + 2) = ;13 |
| 128 | 123, 125,
127 | prmlem0 13240 |
. . . . 5
⊢ ((¬ 2
∥ ;11 ∧ 𝑥 ∈
(ℤ≥‘;11)) → ((𝑥 ∈ (ℙ ∖ {2}) ∧ (𝑥↑2) ≤ 𝑁) → ¬ 𝑥 ∥ 𝑁)) |
| 129 | | 9nprm 13247 |
. . . . . 6
⊢ ¬ 9
∈ ℙ |
| 130 | 129 | pm2.21i 655 |
. . . . 5
⊢ (9 ∈
ℙ → ¬ 9 ∥ 𝑁) |
| 131 | 128, 130,
105 | prmlem0 13240 |
. . . 4
⊢ ((¬ 2
∥ 9 ∧ 𝑥 ∈
(ℤ≥‘9)) → ((𝑥 ∈ (ℙ ∖ {2}) ∧ (𝑥↑2) ≤ 𝑁) → ¬ 𝑥 ∥ 𝑁)) |
| 132 | | prmlem2.7 |
. . . . 5
⊢ ¬ 7
∥ 𝑁 |
| 133 | 132 | a1i 9 |
. . . 4
⊢ (7 ∈
ℙ → ¬ 7 ∥ 𝑁) |
| 134 | 131, 133,
75 | prmlem0 13240 |
. . 3
⊢ ((¬ 2
∥ 7 ∧ 𝑥 ∈
(ℤ≥‘7)) → ((𝑥 ∈ (ℙ ∖ {2}) ∧ (𝑥↑2) ≤ 𝑁) → ¬ 𝑥 ∥ 𝑁)) |
| 135 | | prmlem2.5 |
. . . 4
⊢ ¬ 5
∥ 𝑁 |
| 136 | 135 | a1i 9 |
. . 3
⊢ (5 ∈
ℙ → ¬ 5 ∥ 𝑁) |
| 137 | 134, 136,
36 | prmlem0 13240 |
. 2
⊢ ((¬ 2
∥ 5 ∧ 𝑥 ∈
(ℤ≥‘5)) → ((𝑥 ∈ (ℙ ∖ {2}) ∧ (𝑥↑2) ≤ 𝑁) → ¬ 𝑥 ∥ 𝑁)) |
| 138 | 1, 2, 3, 4, 137 | prmlem1a 13241 |
1
⊢ 𝑁 ∈ ℙ |