| Step | Hyp | Ref
| Expression |
| 1 | | nncdiv3lem2 6277 |
. 2
  Nn           1c    
 2c   |
| 2 | | eqeq1 2359 |
. . . 4
 0c    
 0c   
    |
| 3 | | eqeq1 2359 |
. . . 4
 0c       1c 0c      1c   |
| 4 | | eqeq1 2359 |
. . . 4
 0c       2c 0c      2c   |
| 5 | 2, 3, 4 | 3orbi123d 1251 |
. . 3
 0c          
 1c      2c 0c     0c      1c
0c      2c    |
| 6 | 5 | rexbidv 2636 |
. 2
 0c   Nn           1c      2c  Nn 0c   
 0c      1c 0c      2c    |
| 7 | | eqeq1 2359 |
. . . 4
 
   
       |
| 8 | | eqeq1 2359 |
. . . 4
 
  
  1c      1c   |
| 9 | | eqeq1 2359 |
. . . 4
 
  
  2c      2c   |
| 10 | 7, 8, 9 | 3orbi123d 1251 |
. . 3
  
 
       1c    
 2c         
 1c      2c    |
| 11 | 10 | rexbidv 2636 |
. 2
  
Nn           1c    
 2c  Nn           1c      2c    |
| 12 | | eqeq1 2359 |
. . . 4
  1c       1c
       |
| 13 | | eqeq1 2359 |
. . . 4
  1c     
 1c  1c      1c   |
| 14 | | eqeq1 2359 |
. . . 4
  1c     
 2c  1c      2c   |
| 15 | 12, 13, 14 | 3orbi123d 1251 |
. . 3
  1c     
    
 1c      2c  
1c      1c      1c  1c
  
  2c    |
| 16 | 15 | rexbidv 2636 |
. 2
  1c   Nn         
 1c      2c  Nn   1c   
  1c      1c  1c      2c    |
| 17 | | eqeq1 2359 |
. . . 4
 
   
       |
| 18 | | eqeq1 2359 |
. . . 4
 
  
  1c      1c   |
| 19 | | eqeq1 2359 |
. . . 4
 
  
  2c      2c   |
| 20 | 17, 18, 19 | 3orbi123d 1251 |
. . 3
  
 
       1c    
 2c         
 1c    
 2c    |
| 21 | 20 | rexbidv 2636 |
. 2
  
Nn           1c    
 2c  Nn           1c    
 2c    |
| 22 | | peano1 4403 |
. . 3
0c
Nn |
| 23 | | addcid1 4406 |
. . . . 5
 0c 0c 0c
0c 0c |
| 24 | | addcid2 4408 |
. . . . 5
0c 0c 0c |
| 25 | 23, 24 | eqtr2i 2374 |
. . . 4
0c
 0c 0c 0c |
| 26 | | 3mix1 1124 |
. . . 4
0c  0c 0c
0c 0c  0c
0c 0c 0c   0c 0c 0c 1c
0c   0c 0c
0c 2c   |
| 27 | 25, 26 | ax-mp 5 |
. . 3
0c  0c 0c
0c 0c   0c
0c 0c 1c 0c   0c 0c 0c 2c  |
| 28 | | addceq12 4386 |
. . . . . . . 8
 
0c
0c  
0c 0c  |
| 29 | 28 | anidms 626 |
. . . . . . 7
 0c  
0c 0c  |
| 30 | | id 19 |
. . . . . . 7
 0c 0c |
| 31 | 29, 30 | addceq12d 4392 |
. . . . . 6
 0c    
 0c 0c 0c  |
| 32 | 31 | eqeq2d 2364 |
. . . . 5
 0c 0c     0c  0c
0c 0c   |
| 33 | 31 | addceq1d 4390 |
. . . . . 6
 0c      1c   0c 0c 0c 1c  |
| 34 | 33 | eqeq2d 2364 |
. . . . 5
 0c 0c      1c
0c   0c 0c
0c 1c   |
| 35 | 31 | addceq1d 4390 |
. . . . . 6
 0c      2c   0c 0c 0c 2c  |
| 36 | 35 | eqeq2d 2364 |
. . . . 5
 0c 0c      2c
0c   0c 0c
0c 2c   |
| 37 | 32, 34, 36 | 3orbi123d 1251 |
. . . 4
 0c  0c     0c      1c
0c      2c 0c  0c 0c 0c 0c   0c 0c 0c 1c
0c   0c 0c
0c 2c    |
| 38 | 37 | rspcev 2956 |
. . 3
 0c Nn 0c  0c
0c 0c 0c   0c 0c 0c 1c
0c   0c 0c
0c 2c   Nn 0c   
 0c      1c 0c      2c   |
| 39 | 22, 27, 38 | mp2an 653 |
. 2
 Nn 0c   
 0c      1c 0c      2c  |
| 40 | | addceq1 4384 |
. . . . . 6
      1c      1c  |
| 41 | 40 | reximi 2722 |
. . . . 5
 
Nn     
Nn  1c      1c  |
| 42 | 41 | a1i 10 |
. . . 4
 Nn   Nn   
  Nn  1c
  
  1c   |
| 43 | | addceq1 4384 |
. . . . . . 7
      1c 
1c       1c 1c  |
| 44 | | addcass 4416 |
. . . . . . . 8
    
 1c
1c    
 1c 1c  |
| 45 | | 1p1e2c 6156 |
. . . . . . . . 9
1c 1c 2c |
| 46 | 45 | addceq2i 4388 |
. . . . . . . 8
     1c 1c
     2c |
| 47 | 44, 46 | eqtri 2373 |
. . . . . . 7
    
 1c
1c    
 2c |
| 48 | 43, 47 | syl6eq 2401 |
. . . . . 6
      1c 
1c      2c  |
| 49 | 48 | reximi 2722 |
. . . . 5
 
Nn      1c  Nn  1c      2c  |
| 50 | 49 | a1i 10 |
. . . 4
 Nn   Nn      1c  Nn 
1c    
 2c   |
| 51 | | peano2 4404 |
. . . . . . . . 9
 Nn  1c Nn  |
| 52 | | addc32 4417 |
. . . . . . . . . . . 12
     2c     2c   |
| 53 | 45 | addceq2i 4388 |
. . . . . . . . . . . . . 14
   1c 1c    2c |
| 54 | | addc4 4418 |
. . . . . . . . . . . . . 14
   1c 1c   1c 
1c  |
| 55 | 53, 54 | eqtr3i 2375 |
. . . . . . . . . . . . 13
   2c
  1c  1c  |
| 56 | 55 | addceq1i 4387 |
. . . . . . . . . . . 12
    2c    
1c  1c   |
| 57 | 52, 56 | eqtri 2373 |
. . . . . . . . . . 11
     2c   
1c  1c   |
| 58 | 57 | addceq1i 4387 |
. . . . . . . . . 10
    
 2c
1c     1c  1c  1c |
| 59 | | addcass 4416 |
. . . . . . . . . 10
    1c  1c  1c    1c  1c  1c  |
| 60 | 58, 59 | eqtri 2373 |
. . . . . . . . 9
    
 2c
1c    1c  1c  1c  |
| 61 | | addceq12 4386 |
. . . . . . . . . . . . 13
   1c 
1c 

  1c  1c   |
| 62 | 61 | anidms 626 |
. . . . . . . . . . . 12
  1c  
  1c  1c   |
| 63 | | id 19 |
. . . . . . . . . . . 12
  1c  1c  |
| 64 | 62, 63 | addceq12d 4392 |
. . . . . . . . . . 11
  1c   

  
1c 
1c  1c   |
| 65 | 64 | eqeq2d 2364 |
. . . . . . . . . 10
  1c        2c 1c
   
      2c 1c
  
1c 
1c  1c    |
| 66 | 65 | rspcev 2956 |
. . . . . . . . 9
   1c Nn     
 2c
1c    1c  1c  1c   Nn       2c
1c       |
| 67 | 51, 60, 66 | sylancl 643 |
. . . . . . . 8
 Nn  Nn       2c 1c       |
| 68 | | addceq1 4384 |
. . . . . . . . . 10
      2c 
1c       2c 1c  |
| 69 | 68 | eqeq1d 2361 |
. . . . . . . . 9
      2c   1c   
       2c 1c        |
| 70 | 69 | rexbidv 2636 |
. . . . . . . 8
      2c   Nn  1c   
  Nn       2c 1c        |
| 71 | 67, 70 | syl5ibrcom 213 |
. . . . . . 7
 Nn     
 2c  Nn 
1c        |
| 72 | 71 | rexlimiv 2733 |
. . . . . 6
 
Nn      2c  Nn  1c   
   |
| 73 | | addceq12 4386 |
. . . . . . . . . 10
 
  
    |
| 74 | 73 | anidms 626 |
. . . . . . . . 9
       |
| 75 | | id 19 |
. . . . . . . . 9
   |
| 76 | 74, 75 | addceq12d 4392 |
. . . . . . . 8
  
    
   |
| 77 | 76 | eqeq2d 2364 |
. . . . . . 7
  
1c   
  1c   
    |
| 78 | 77 | cbvrexv 2837 |
. . . . . 6
 
Nn  1c   
  Nn  1c   
   |
| 79 | 72, 78 | sylib 188 |
. . . . 5
 
Nn      2c  Nn  1c   
   |
| 80 | 79 | a1i 10 |
. . . 4
 Nn   Nn      2c  Nn 
1c        |
| 81 | 42, 50, 80 | 3orim123d 1260 |
. . 3
 Nn    Nn   
  Nn      1c  Nn      2c  
Nn  1c      1c  Nn 
1c    
 2c  Nn 
1c         |
| 82 | | df-3or 935 |
. . . . 5
           1c      2c            1c      2c   |
| 83 | 82 | rexbii 2640 |
. . . 4
 
Nn           1c    
 2c  Nn            1c      2c   |
| 84 | | r19.43 2767 |
. . . . . 6
 
Nn           1c   Nn   
  Nn      1c   |
| 85 | 84 | orbi1i 506 |
. . . . 5
  
Nn           1c  Nn      2c   
Nn     
Nn      1c  Nn      2c   |
| 86 | | r19.43 2767 |
. . . . 5
 
Nn     
    
 1c      2c  
Nn           1c  Nn      2c   |
| 87 | | df-3or 935 |
. . . . 5
  
Nn     
Nn      1c  Nn      2c   
Nn     
Nn      1c  Nn      2c   |
| 88 | 85, 86, 87 | 3bitr4i 268 |
. . . 4
 
Nn     
    
 1c      2c  
Nn     
Nn      1c  Nn      2c   |
| 89 | 83, 88 | bitri 240 |
. . 3
 
Nn           1c    
 2c  
Nn     
Nn      1c  Nn      2c   |
| 90 | | df-3or 935 |
. . . . 5
   1c   
  1c      1c  1c      2c    1c   
  1c      1c  1c      2c   |
| 91 | 90 | rexbii 2640 |
. . . 4
 
Nn   1c      1c      1c  1c      2c  Nn    1c      1c      1c  1c      2c   |
| 92 | | r19.43 2767 |
. . . . 5
 
Nn    1c
   
 1c      1c  1c
  
  2c   Nn   1c   
  1c      1c  Nn  1c
  
  2c   |
| 93 | | r19.43 2767 |
. . . . . . 7
 
Nn   1c      1c      1c   Nn  1c
   
 Nn 
1c    
 1c   |
| 94 | 93 | orbi1i 506 |
. . . . . 6
  
Nn   1c      1c      1c  Nn  1c
  
  2c   
Nn  1c   
  Nn  1c
  
  1c  Nn 
1c    
 2c   |
| 95 | | df-3or 935 |
. . . . . 6
  
Nn  1c   
  Nn  1c
  
  1c  Nn  1c
  
  2c   
Nn  1c   
  Nn  1c
  
  1c  Nn 
1c    
 2c   |
| 96 | | 3orrot 940 |
. . . . . 6
  
Nn  1c   
  Nn  1c
  
  1c  Nn  1c
  
  2c   Nn 
1c    
 1c  Nn 
1c    
 2c  Nn 
1c        |
| 97 | 94, 95, 96 | 3bitr2i 264 |
. . . . 5
  
Nn   1c      1c      1c  Nn  1c
  
  2c   Nn 
1c    
 1c  Nn 
1c    
 2c  Nn 
1c        |
| 98 | 92, 97 | bitri 240 |
. . . 4
 
Nn    1c
   
 1c      1c  1c
  
  2c   Nn 
1c    
 1c  Nn 
1c    
 2c  Nn 
1c        |
| 99 | 91, 98 | bitri 240 |
. . 3
 
Nn   1c      1c      1c  1c      2c  
Nn  1c      1c  Nn 
1c    
 2c  Nn 
1c        |
| 100 | 81, 89, 99 | 3imtr4g 261 |
. 2
 Nn   Nn         
 1c      2c 
Nn   1c      1c      1c  1c      2c    |
| 101 | 1, 6, 11, 16, 21, 39, 100 | finds 4412 |
1
 Nn  Nn           1c    
 2c   |