Metamath Proof Explorer


Theorem isprm5

Description: One need only check prime divisors of P up to sqrt P in order to ensure primality. (Contributed by Mario Carneiro, 18-Feb-2014)

Ref Expression
Assertion isprm5 ⊢ P ∈ ℙ ↔ P ∈ ℤ ≥ 2 ∧ ∀ z ∈ ℙ z 2 ≤ P → ¬ z ∥ P

Proof

Step Hyp Ref Expression
1 isprm4 ⊢ P ∈ ℙ ↔ P ∈ ℤ ≥ 2 ∧ ∀ z ∈ ℤ ≥ 2 z ∥ P → z = P
2 prmuz2 ⊢ z ∈ ℙ → z ∈ ℤ ≥ 2
3 2 a1i ⊢ P ∈ ℤ ≥ 2 → z ∈ ℙ → z ∈ ℤ ≥ 2
4 eluz2gt1 ⊢ P ∈ ℤ ≥ 2 → 1 < P
5 eluzelre ⊢ P ∈ ℤ ≥ 2 → P ∈ ℝ
6 eluz2nn ⊢ P ∈ ℤ ≥ 2 → P ∈ ℕ
7 6 nngt0d ⊢ P ∈ ℤ ≥ 2 → 0 < P
8 ltmulgt11 ⊢ P ∈ ℝ ∧ P ∈ ℝ ∧ 0 < P → 1 < P ↔ P < P ⁢ P
9 5 5 7 8 syl3anc ⊢ P ∈ ℤ ≥ 2 → 1 < P ↔ P < P ⁢ P
10 4 9 mpbid ⊢ P ∈ ℤ ≥ 2 → P < P ⁢ P
11 5 5 remulcld ⊢ P ∈ ℤ ≥ 2 → P ⁢ P ∈ ℝ
12 5 11 ltnled ⊢ P ∈ ℤ ≥ 2 → P < P ⁢ P ↔ ¬ P ⁢ P ≤ P
13 10 12 mpbid ⊢ P ∈ ℤ ≥ 2 → ¬ P ⁢ P ≤ P
14 oveq12 ⊢ z = P ∧ z = P → z ⁢ z = P ⁢ P
15 14 anidms ⊢ z = P → z ⁢ z = P ⁢ P
16 15 breq1d ⊢ z = P → z ⁢ z ≤ P ↔ P ⁢ P ≤ P
17 16 notbid ⊢ z = P → ¬ z ⁢ z ≤ P ↔ ¬ P ⁢ P ≤ P
18 13 17 syl5ibrcom ⊢ P ∈ ℤ ≥ 2 → z = P → ¬ z ⁢ z ≤ P
19 18 imim2d ⊢ P ∈ ℤ ≥ 2 → z ∥ P → z = P → z ∥ P → ¬ z ⁢ z ≤ P
20 con2 ⊢ z ∥ P → ¬ z ⁢ z ≤ P → z ⁢ z ≤ P → ¬ z ∥ P
21 19 20 syl6 ⊢ P ∈ ℤ ≥ 2 → z ∥ P → z = P → z ⁢ z ≤ P → ¬ z ∥ P
22 3 21 imim12d ⊢ P ∈ ℤ ≥ 2 → z ∈ ℤ ≥ 2 → z ∥ P → z = P → z ∈ ℙ → z ⁢ z ≤ P → ¬ z ∥ P
23 22 ralimdv2 ⊢ P ∈ ℤ ≥ 2 → ∀ z ∈ ℤ ≥ 2 z ∥ P → z = P → ∀ z ∈ ℙ z ⁢ z ≤ P → ¬ z ∥ P
24 annim ⊢ z ∥ P ∧ ¬ z = P ↔ ¬ z ∥ P → z = P
25 oveq12 ⊢ x = z ∧ x = z → x ⁢ x = z ⁢ z
26 25 anidms ⊢ x = z → x ⁢ x = z ⁢ z
27 26 breq1d ⊢ x = z → x ⁢ x ≤ P ↔ z ⁢ z ≤ P
28 breq1 ⊢ x = z → x ∥ P ↔ z ∥ P
29 27 28 anbi12d ⊢ x = z → x ⁢ x ≤ P ∧ x ∥ P ↔ z ⁢ z ≤ P ∧ z ∥ P
30 29 rspcev ⊢ z ∈ ℤ ≥ 2 ∧ z ⁢ z ≤ P ∧ z ∥ P → ∃ x ∈ ℤ ≥ 2 x ⁢ x ≤ P ∧ x ∥ P
31 30 ancom2s ⊢ z ∈ ℤ ≥ 2 ∧ z ∥ P ∧ z ⁢ z ≤ P → ∃ x ∈ ℤ ≥ 2 x ⁢ x ≤ P ∧ x ∥ P
32 31 expr ⊢ z ∈ ℤ ≥ 2 ∧ z ∥ P → z ⁢ z ≤ P → ∃ x ∈ ℤ ≥ 2 x ⁢ x ≤ P ∧ x ∥ P
33 32 ad2ant2lr ⊢ P ∈ ℤ ≥ 2 ∧ z ∈ ℤ ≥ 2 ∧ z ∥ P ∧ ¬ z = P → z ⁢ z ≤ P → ∃ x ∈ ℤ ≥ 2 x ⁢ x ≤ P ∧ x ∥ P
34 simprl ⊢ P ∈ ℤ ≥ 2 ∧ z ∈ ℤ ≥ 2 ∧ z ∥ P ∧ ¬ z = P → z ∥ P
35 eluzelz ⊢ z ∈ ℤ ≥ 2 → z ∈ ℤ
36 35 ad2antlr ⊢ P ∈ ℤ ≥ 2 ∧ z ∈ ℤ ≥ 2 ∧ z ∥ P ∧ ¬ z = P → z ∈ ℤ
37 eluz2nn ⊢ z ∈ ℤ ≥ 2 → z ∈ ℕ
38 37 ad2antlr ⊢ P ∈ ℤ ≥ 2 ∧ z ∈ ℤ ≥ 2 ∧ z ∥ P ∧ ¬ z = P → z ∈ ℕ
39 38 nnne0d ⊢ P ∈ ℤ ≥ 2 ∧ z ∈ ℤ ≥ 2 ∧ z ∥ P ∧ ¬ z = P → z ≠ 0
40 eluzelz ⊢ P ∈ ℤ ≥ 2 → P ∈ ℤ
41 40 ad2antrr ⊢ P ∈ ℤ ≥ 2 ∧ z ∈ ℤ ≥ 2 ∧ z ∥ P ∧ ¬ z = P → P ∈ ℤ
42 dvdsval2 ⊢ z ∈ ℤ ∧ z ≠ 0 ∧ P ∈ ℤ → z ∥ P ↔ P z ∈ ℤ
43 36 39 41 42 syl3anc ⊢ P ∈ ℤ ≥ 2 ∧ z ∈ ℤ ≥ 2 ∧ z ∥ P ∧ ¬ z = P → z ∥ P ↔ P z ∈ ℤ
44 34 43 mpbid ⊢ P ∈ ℤ ≥ 2 ∧ z ∈ ℤ ≥ 2 ∧ z ∥ P ∧ ¬ z = P → P z ∈ ℤ
45 eluzelre ⊢ z ∈ ℤ ≥ 2 → z ∈ ℝ
46 45 ad2antlr ⊢ P ∈ ℤ ≥ 2 ∧ z ∈ ℤ ≥ 2 ∧ z ∥ P ∧ ¬ z = P → z ∈ ℝ
47 46 recnd ⊢ P ∈ ℤ ≥ 2 ∧ z ∈ ℤ ≥ 2 ∧ z ∥ P ∧ ¬ z = P → z ∈ ℂ
48 47 mullidd ⊢ P ∈ ℤ ≥ 2 ∧ z ∈ ℤ ≥ 2 ∧ z ∥ P ∧ ¬ z = P → 1 ⁢ z = z
49 5 ad2antrr ⊢ P ∈ ℤ ≥ 2 ∧ z ∈ ℤ ≥ 2 ∧ z ∥ P ∧ ¬ z = P → P ∈ ℝ
50 6 ad2antrr ⊢ P ∈ ℤ ≥ 2 ∧ z ∈ ℤ ≥ 2 ∧ z ∥ P ∧ ¬ z = P → P ∈ ℕ
51 dvdsle ⊢ z ∈ ℤ ∧ P ∈ ℕ → z ∥ P → z ≤ P
52 51 imp ⊢ z ∈ ℤ ∧ P ∈ ℕ ∧ z ∥ P → z ≤ P
53 36 50 34 52 syl21anc ⊢ P ∈ ℤ ≥ 2 ∧ z ∈ ℤ ≥ 2 ∧ z ∥ P ∧ ¬ z = P → z ≤ P
54 simprr ⊢ P ∈ ℤ ≥ 2 ∧ z ∈ ℤ ≥ 2 ∧ z ∥ P ∧ ¬ z = P → ¬ z = P
55 54 neqned ⊢ P ∈ ℤ ≥ 2 ∧ z ∈ ℤ ≥ 2 ∧ z ∥ P ∧ ¬ z = P → z ≠ P
56 55 necomd ⊢ P ∈ ℤ ≥ 2 ∧ z ∈ ℤ ≥ 2 ∧ z ∥ P ∧ ¬ z = P → P ≠ z
57 46 49 53 56 leneltd ⊢ P ∈ ℤ ≥ 2 ∧ z ∈ ℤ ≥ 2 ∧ z ∥ P ∧ ¬ z = P → z < P
58 48 57 eqbrtrd ⊢ P ∈ ℤ ≥ 2 ∧ z ∈ ℤ ≥ 2 ∧ z ∥ P ∧ ¬ z = P → 1 ⁢ z < P
59 1red ⊢ P ∈ ℤ ≥ 2 ∧ z ∈ ℤ ≥ 2 ∧ z ∥ P ∧ ¬ z = P → 1 ∈ ℝ
60 41 zred ⊢ P ∈ ℤ ≥ 2 ∧ z ∈ ℤ ≥ 2 ∧ z ∥ P ∧ ¬ z = P → P ∈ ℝ
61 nnre ⊢ z ∈ ℕ → z ∈ ℝ
62 nngt0 ⊢ z ∈ ℕ → 0 < z
63 61 62 jca ⊢ z ∈ ℕ → z ∈ ℝ ∧ 0 < z
64 38 63 syl ⊢ P ∈ ℤ ≥ 2 ∧ z ∈ ℤ ≥ 2 ∧ z ∥ P ∧ ¬ z = P → z ∈ ℝ ∧ 0 < z
65 ltmuldiv ⊢ 1 ∈ ℝ ∧ P ∈ ℝ ∧ z ∈ ℝ ∧ 0 < z → 1 ⁢ z < P ↔ 1 < P z
66 59 60 64 65 syl3anc ⊢ P ∈ ℤ ≥ 2 ∧ z ∈ ℤ ≥ 2 ∧ z ∥ P ∧ ¬ z = P → 1 ⁢ z < P ↔ 1 < P z
67 58 66 mpbid ⊢ P ∈ ℤ ≥ 2 ∧ z ∈ ℤ ≥ 2 ∧ z ∥ P ∧ ¬ z = P → 1 < P z
68 eluz2b1 ⊢ P z ∈ ℤ ≥ 2 ↔ P z ∈ ℤ ∧ 1 < P z
69 44 67 68 sylanbrc ⊢ P ∈ ℤ ≥ 2 ∧ z ∈ ℤ ≥ 2 ∧ z ∥ P ∧ ¬ z = P → P z ∈ ℤ ≥ 2
70 46 46 remulcld ⊢ P ∈ ℤ ≥ 2 ∧ z ∈ ℤ ≥ 2 ∧ z ∥ P ∧ ¬ z = P → z ⁢ z ∈ ℝ
71 38 38 nnmulcld ⊢ P ∈ ℤ ≥ 2 ∧ z ∈ ℤ ≥ 2 ∧ z ∥ P ∧ ¬ z = P → z ⁢ z ∈ ℕ
72 nnrp ⊢ P ∈ ℕ → P ∈ ℝ +
73 nnrp ⊢ z ⁢ z ∈ ℕ → z ⁢ z ∈ ℝ +
74 rpdivcl ⊢ P ∈ ℝ + ∧ z ⁢ z ∈ ℝ + → P z ⁢ z ∈ ℝ +
75 72 73 74 syl2an ⊢ P ∈ ℕ ∧ z ⁢ z ∈ ℕ → P z ⁢ z ∈ ℝ +
76 50 71 75 syl2anc ⊢ P ∈ ℤ ≥ 2 ∧ z ∈ ℤ ≥ 2 ∧ z ∥ P ∧ ¬ z = P → P z ⁢ z ∈ ℝ +
77 49 70 76 lemul1d ⊢ P ∈ ℤ ≥ 2 ∧ z ∈ ℤ ≥ 2 ∧ z ∥ P ∧ ¬ z = P → P ≤ z ⁢ z ↔ P ⁢ P z ⁢ z ≤ z ⁢ z ⁢ P z ⁢ z
78 49 recnd ⊢ P ∈ ℤ ≥ 2 ∧ z ∈ ℤ ≥ 2 ∧ z ∥ P ∧ ¬ z = P → P ∈ ℂ
79 78 47 78 47 39 39 divmuldivd ⊢ P ∈ ℤ ≥ 2 ∧ z ∈ ℤ ≥ 2 ∧ z ∥ P ∧ ¬ z = P → P z ⁢ P z = P ⁢ P z ⁢ z
80 71 nncnd ⊢ P ∈ ℤ ≥ 2 ∧ z ∈ ℤ ≥ 2 ∧ z ∥ P ∧ ¬ z = P → z ⁢ z ∈ ℂ
81 71 nnne0d ⊢ P ∈ ℤ ≥ 2 ∧ z ∈ ℤ ≥ 2 ∧ z ∥ P ∧ ¬ z = P → z ⁢ z ≠ 0
82 78 78 80 81 divassd ⊢ P ∈ ℤ ≥ 2 ∧ z ∈ ℤ ≥ 2 ∧ z ∥ P ∧ ¬ z = P → P ⁢ P z ⁢ z = P ⁢ P z ⁢ z
83 79 82 eqtrd ⊢ P ∈ ℤ ≥ 2 ∧ z ∈ ℤ ≥ 2 ∧ z ∥ P ∧ ¬ z = P → P z ⁢ P z = P ⁢ P z ⁢ z
84 78 80 81 divcan2d ⊢ P ∈ ℤ ≥ 2 ∧ z ∈ ℤ ≥ 2 ∧ z ∥ P ∧ ¬ z = P → z ⁢ z ⁢ P z ⁢ z = P
85 84 eqcomd ⊢ P ∈ ℤ ≥ 2 ∧ z ∈ ℤ ≥ 2 ∧ z ∥ P ∧ ¬ z = P → P = z ⁢ z ⁢ P z ⁢ z
86 83 85 breq12d ⊢ P ∈ ℤ ≥ 2 ∧ z ∈ ℤ ≥ 2 ∧ z ∥ P ∧ ¬ z = P → P z ⁢ P z ≤ P ↔ P ⁢ P z ⁢ z ≤ z ⁢ z ⁢ P z ⁢ z
87 77 86 bitr4d ⊢ P ∈ ℤ ≥ 2 ∧ z ∈ ℤ ≥ 2 ∧ z ∥ P ∧ ¬ z = P → P ≤ z ⁢ z ↔ P z ⁢ P z ≤ P
88 87 biimpd ⊢ P ∈ ℤ ≥ 2 ∧ z ∈ ℤ ≥ 2 ∧ z ∥ P ∧ ¬ z = P → P ≤ z ⁢ z → P z ⁢ P z ≤ P
89 78 47 39 divcan2d ⊢ P ∈ ℤ ≥ 2 ∧ z ∈ ℤ ≥ 2 ∧ z ∥ P ∧ ¬ z = P → z ⁢ P z = P
90 dvds0lem ⊢ z ∈ ℤ ∧ P z ∈ ℤ ∧ P ∈ ℤ ∧ z ⁢ P z = P → P z ∥ P
91 36 44 41 89 90 syl31anc ⊢ P ∈ ℤ ≥ 2 ∧ z ∈ ℤ ≥ 2 ∧ z ∥ P ∧ ¬ z = P → P z ∥ P
92 88 91 jctird ⊢ P ∈ ℤ ≥ 2 ∧ z ∈ ℤ ≥ 2 ∧ z ∥ P ∧ ¬ z = P → P ≤ z ⁢ z → P z ⁢ P z ≤ P ∧ P z ∥ P
93 oveq12 ⊢ x = P z ∧ x = P z → x ⁢ x = P z ⁢ P z
94 93 anidms ⊢ x = P z → x ⁢ x = P z ⁢ P z
95 94 breq1d ⊢ x = P z → x ⁢ x ≤ P ↔ P z ⁢ P z ≤ P
96 breq1 ⊢ x = P z → x ∥ P ↔ P z ∥ P
97 95 96 anbi12d ⊢ x = P z → x ⁢ x ≤ P ∧ x ∥ P ↔ P z ⁢ P z ≤ P ∧ P z ∥ P
98 97 rspcev ⊢ P z ∈ ℤ ≥ 2 ∧ P z ⁢ P z ≤ P ∧ P z ∥ P → ∃ x ∈ ℤ ≥ 2 x ⁢ x ≤ P ∧ x ∥ P
99 69 92 98 syl6an ⊢ P ∈ ℤ ≥ 2 ∧ z ∈ ℤ ≥ 2 ∧ z ∥ P ∧ ¬ z = P → P ≤ z ⁢ z → ∃ x ∈ ℤ ≥ 2 x ⁢ x ≤ P ∧ x ∥ P
100 70 49 letrid ⊢ P ∈ ℤ ≥ 2 ∧ z ∈ ℤ ≥ 2 ∧ z ∥ P ∧ ¬ z = P → z ⁢ z ≤ P ∨ P ≤ z ⁢ z
101 33 99 100 mpjaod ⊢ P ∈ ℤ ≥ 2 ∧ z ∈ ℤ ≥ 2 ∧ z ∥ P ∧ ¬ z = P → ∃ x ∈ ℤ ≥ 2 x ⁢ x ≤ P ∧ x ∥ P
102 101 ex ⊢ P ∈ ℤ ≥ 2 ∧ z ∈ ℤ ≥ 2 → z ∥ P ∧ ¬ z = P → ∃ x ∈ ℤ ≥ 2 x ⁢ x ≤ P ∧ x ∥ P
103 24 102 biimtrrid ⊢ P ∈ ℤ ≥ 2 ∧ z ∈ ℤ ≥ 2 → ¬ z ∥ P → z = P → ∃ x ∈ ℤ ≥ 2 x ⁢ x ≤ P ∧ x ∥ P
104 103 rexlimdva ⊢ P ∈ ℤ ≥ 2 → ∃ z ∈ ℤ ≥ 2 ¬ z ∥ P → z = P → ∃ x ∈ ℤ ≥ 2 x ⁢ x ≤ P ∧ x ∥ P
105 prmz ⊢ z ∈ ℙ → z ∈ ℤ
106 105 ad2antrl ⊢ P ∈ ℤ ≥ 2 ∧ x ∈ ℤ ≥ 2 ∧ x ⁢ x ≤ P ∧ x ∥ P ∧ z ∈ ℙ ∧ z ∥ x → z ∈ ℤ
107 106 zred ⊢ P ∈ ℤ ≥ 2 ∧ x ∈ ℤ ≥ 2 ∧ x ⁢ x ≤ P ∧ x ∥ P ∧ z ∈ ℙ ∧ z ∥ x → z ∈ ℝ
108 107 107 remulcld ⊢ P ∈ ℤ ≥ 2 ∧ x ∈ ℤ ≥ 2 ∧ x ⁢ x ≤ P ∧ x ∥ P ∧ z ∈ ℙ ∧ z ∥ x → z ⁢ z ∈ ℝ
109 eluzelz ⊢ x ∈ ℤ ≥ 2 → x ∈ ℤ
110 109 ad3antlr ⊢ P ∈ ℤ ≥ 2 ∧ x ∈ ℤ ≥ 2 ∧ x ⁢ x ≤ P ∧ x ∥ P ∧ z ∈ ℙ ∧ z ∥ x → x ∈ ℤ
111 110 zred ⊢ P ∈ ℤ ≥ 2 ∧ x ∈ ℤ ≥ 2 ∧ x ⁢ x ≤ P ∧ x ∥ P ∧ z ∈ ℙ ∧ z ∥ x → x ∈ ℝ
112 111 111 remulcld ⊢ P ∈ ℤ ≥ 2 ∧ x ∈ ℤ ≥ 2 ∧ x ⁢ x ≤ P ∧ x ∥ P ∧ z ∈ ℙ ∧ z ∥ x → x ⁢ x ∈ ℝ
113 40 ad3antrrr ⊢ P ∈ ℤ ≥ 2 ∧ x ∈ ℤ ≥ 2 ∧ x ⁢ x ≤ P ∧ x ∥ P ∧ z ∈ ℙ ∧ z ∥ x → P ∈ ℤ
114 113 zred ⊢ P ∈ ℤ ≥ 2 ∧ x ∈ ℤ ≥ 2 ∧ x ⁢ x ≤ P ∧ x ∥ P ∧ z ∈ ℙ ∧ z ∥ x → P ∈ ℝ
115 eluz2nn ⊢ x ∈ ℤ ≥ 2 → x ∈ ℕ
116 115 ad3antlr ⊢ P ∈ ℤ ≥ 2 ∧ x ∈ ℤ ≥ 2 ∧ x ⁢ x ≤ P ∧ x ∥ P ∧ z ∈ ℙ ∧ z ∥ x → x ∈ ℕ
117 simprr ⊢ P ∈ ℤ ≥ 2 ∧ x ∈ ℤ ≥ 2 ∧ x ⁢ x ≤ P ∧ x ∥ P ∧ z ∈ ℙ ∧ z ∥ x → z ∥ x
118 dvdsle ⊢ z ∈ ℤ ∧ x ∈ ℕ → z ∥ x → z ≤ x
119 118 imp ⊢ z ∈ ℤ ∧ x ∈ ℕ ∧ z ∥ x → z ≤ x
120 106 116 117 119 syl21anc ⊢ P ∈ ℤ ≥ 2 ∧ x ∈ ℤ ≥ 2 ∧ x ⁢ x ≤ P ∧ x ∥ P ∧ z ∈ ℙ ∧ z ∥ x → z ≤ x
121 eluzge2nn0 ⊢ z ∈ ℤ ≥ 2 → z ∈ ℕ 0
122 121 nn0ge0d ⊢ z ∈ ℤ ≥ 2 → 0 ≤ z
123 2 122 syl ⊢ z ∈ ℙ → 0 ≤ z
124 123 ad2antrl ⊢ P ∈ ℤ ≥ 2 ∧ x ∈ ℤ ≥ 2 ∧ x ⁢ x ≤ P ∧ x ∥ P ∧ z ∈ ℙ ∧ z ∥ x → 0 ≤ z
125 nnnn0 ⊢ x ∈ ℕ → x ∈ ℕ 0
126 125 nn0ge0d ⊢ x ∈ ℕ → 0 ≤ x
127 116 126 syl ⊢ P ∈ ℤ ≥ 2 ∧ x ∈ ℤ ≥ 2 ∧ x ⁢ x ≤ P ∧ x ∥ P ∧ z ∈ ℙ ∧ z ∥ x → 0 ≤ x
128 le2msq ⊢ z ∈ ℝ ∧ 0 ≤ z ∧ x ∈ ℝ ∧ 0 ≤ x → z ≤ x ↔ z ⁢ z ≤ x ⁢ x
129 107 124 111 127 128 syl22anc ⊢ P ∈ ℤ ≥ 2 ∧ x ∈ ℤ ≥ 2 ∧ x ⁢ x ≤ P ∧ x ∥ P ∧ z ∈ ℙ ∧ z ∥ x → z ≤ x ↔ z ⁢ z ≤ x ⁢ x
130 120 129 mpbid ⊢ P ∈ ℤ ≥ 2 ∧ x ∈ ℤ ≥ 2 ∧ x ⁢ x ≤ P ∧ x ∥ P ∧ z ∈ ℙ ∧ z ∥ x → z ⁢ z ≤ x ⁢ x
131 simplrl ⊢ P ∈ ℤ ≥ 2 ∧ x ∈ ℤ ≥ 2 ∧ x ⁢ x ≤ P ∧ x ∥ P ∧ z ∈ ℙ ∧ z ∥ x → x ⁢ x ≤ P
132 108 112 114 130 131 letrd ⊢ P ∈ ℤ ≥ 2 ∧ x ∈ ℤ ≥ 2 ∧ x ⁢ x ≤ P ∧ x ∥ P ∧ z ∈ ℙ ∧ z ∥ x → z ⁢ z ≤ P
133 simplrr ⊢ P ∈ ℤ ≥ 2 ∧ x ∈ ℤ ≥ 2 ∧ x ⁢ x ≤ P ∧ x ∥ P ∧ z ∈ ℙ ∧ z ∥ x → x ∥ P
134 106 110 113 117 133 dvdstrd ⊢ P ∈ ℤ ≥ 2 ∧ x ∈ ℤ ≥ 2 ∧ x ⁢ x ≤ P ∧ x ∥ P ∧ z ∈ ℙ ∧ z ∥ x → z ∥ P
135 132 134 jc ⊢ P ∈ ℤ ≥ 2 ∧ x ∈ ℤ ≥ 2 ∧ x ⁢ x ≤ P ∧ x ∥ P ∧ z ∈ ℙ ∧ z ∥ x → ¬ z ⁢ z ≤ P → ¬ z ∥ P
136 exprmfct ⊢ x ∈ ℤ ≥ 2 → ∃ z ∈ ℙ z ∥ x
137 136 ad2antlr ⊢ P ∈ ℤ ≥ 2 ∧ x ∈ ℤ ≥ 2 ∧ x ⁢ x ≤ P ∧ x ∥ P → ∃ z ∈ ℙ z ∥ x
138 135 137 reximddv ⊢ P ∈ ℤ ≥ 2 ∧ x ∈ ℤ ≥ 2 ∧ x ⁢ x ≤ P ∧ x ∥ P → ∃ z ∈ ℙ ¬ z ⁢ z ≤ P → ¬ z ∥ P
139 138 ex ⊢ P ∈ ℤ ≥ 2 ∧ x ∈ ℤ ≥ 2 → x ⁢ x ≤ P ∧ x ∥ P → ∃ z ∈ ℙ ¬ z ⁢ z ≤ P → ¬ z ∥ P
140 139 rexlimdva ⊢ P ∈ ℤ ≥ 2 → ∃ x ∈ ℤ ≥ 2 x ⁢ x ≤ P ∧ x ∥ P → ∃ z ∈ ℙ ¬ z ⁢ z ≤ P → ¬ z ∥ P
141 104 140 syld ⊢ P ∈ ℤ ≥ 2 → ∃ z ∈ ℤ ≥ 2 ¬ z ∥ P → z = P → ∃ z ∈ ℙ ¬ z ⁢ z ≤ P → ¬ z ∥ P
142 rexnal ⊢ ∃ z ∈ ℤ ≥ 2 ¬ z ∥ P → z = P ↔ ¬ ∀ z ∈ ℤ ≥ 2 z ∥ P → z = P
143 rexnal ⊢ ∃ z ∈ ℙ ¬ z ⁢ z ≤ P → ¬ z ∥ P ↔ ¬ ∀ z ∈ ℙ z ⁢ z ≤ P → ¬ z ∥ P
144 141 142 143 3imtr3g ⊢ P ∈ ℤ ≥ 2 → ¬ ∀ z ∈ ℤ ≥ 2 z ∥ P → z = P → ¬ ∀ z ∈ ℙ z ⁢ z ≤ P → ¬ z ∥ P
145 23 144 impcon4bid ⊢ P ∈ ℤ ≥ 2 → ∀ z ∈ ℤ ≥ 2 z ∥ P → z = P ↔ ∀ z ∈ ℙ z ⁢ z ≤ P → ¬ z ∥ P
146 prmnn ⊢ z ∈ ℙ → z ∈ ℕ
147 146 nncnd ⊢ z ∈ ℙ → z ∈ ℂ
148 147 sqvald ⊢ z ∈ ℙ → z 2 = z ⁢ z
149 148 breq1d ⊢ z ∈ ℙ → z 2 ≤ P ↔ z ⁢ z ≤ P
150 149 imbi1d ⊢ z ∈ ℙ → z 2 ≤ P → ¬ z ∥ P ↔ z ⁢ z ≤ P → ¬ z ∥ P
151 150 ralbiia ⊢ ∀ z ∈ ℙ z 2 ≤ P → ¬ z ∥ P ↔ ∀ z ∈ ℙ z ⁢ z ≤ P → ¬ z ∥ P
152 145 151 bitr4di ⊢ P ∈ ℤ ≥ 2 → ∀ z ∈ ℤ ≥ 2 z ∥ P → z = P ↔ ∀ z ∈ ℙ z 2 ≤ P → ¬ z ∥ P
153 152 pm5.32i ⊢ P ∈ ℤ ≥ 2 ∧ ∀ z ∈ ℤ ≥ 2 z ∥ P → z = P ↔ P ∈ ℤ ≥ 2 ∧ ∀ z ∈ ℙ z 2 ≤ P → ¬ z ∥ P
154 1 153 bitri ⊢ P ∈ ℙ ↔ P ∈ ℤ ≥ 2 ∧ ∀ z ∈ ℙ z 2 ≤ P → ¬ z ∥ P