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Sum of 2 digit primes
| Sum | count |
| 2 | 1 |
| 4 | 2 |
| 5 | 2 |
| 7 | 2 |
| 8 | 3 |
| 10 | 3 |
| 11 | 3 |
| 13 | 1 |
| 14 | 1 |
| 16 | 2 |
| 17 | 1 |
Sum of 3 digit primes
| Sum | count |
| 2 | 1 |
| 4 | 2 |
| 5 | 4 |
| 7 | 7 |
| 8 | 7 |
| 10 | 12 |
| 11 | 13 |
| 13 | 16 |
| 14 | 16 |
| 16 | 13 |
| 17 | 18 |
| 19 | 12 |
| 20 | 11 |
| 22 | 6 |
| 23 | 4 |
| 25 | 1 |
Sum of 4 digit primes
| Sum | count |
| 4 | 4 |
| 5 | 8 |
| 7 | 20 |
| 8 | 19 |
| 10 | 31 |
| 11 | 52 |
| 13 | 67 |
| 14 | 77 |
| 16 | 93 |
| 17 | 101 |
| 19 | 116 |
| 20 | 95 |
| 22 | 92 |
| 23 | 91 |
| 25 | 63 |
| 26 | 51 |
| 28 | 29 |
| 29 | 30 |
| 31 | 16 |
| 32 | 5 |
| 35 | 1 |
Sum of 5 digit primes
| Sum | count |
| 4 | 4 |
| 5 | 12 |
| 7 | 28 |
| 8 | 45 |
| 10 | 95 |
| 11 | 143 |
| 13 | 236 |
| 14 | 272 |
| 16 | 411 |
| 17 | 479 |
| 19 | 630 |
| 20 | 664 |
| 22 | 742 |
| 23 | 757 |
| 25 | 741 |
| 26 | 706 |
| 28 | 580 |
| 29 | 528 |
| 31 | 379 |
| 32 | 341 |
| 34 | 205 |
| 35 | 166 |
| 37 | 84 |
| 38 | 62 |
| 40 | 34 |
| 41 | 13 |
| 43 | 4 |
| 44 | 2 |
Sum of 6 digit primes
| Sum | count |
| 4 | 2 |
| 5 | 14 |
| 7 | 58 |
| 8 | 76 |
| 10 | 204 |
| 11 | 389 |
| 13 | 660 |
| 14 | 852 |
| 16 | 1448 |
| 17 | 1971 |
| 19 | 2832 |
| 20 | 3101 |
| 22 | 4064 |
| 23 | 4651 |
| 25 | 5393 |
| 26 | 5376 |
| 28 | 5570 |
| 29 | 5785 |
| 31 | 5287 |
| 32 | 4796 |
| 34 | 3975 |
| 35 | 3671 |
| 37 | 2687 |
| 38 | 2080 |
| 40 | 1405 |
| 41 | 1135 |
| 43 | 630 |
| 44 | 405 |
| 46 | 178 |
| 47 | 140 |
| 49 | 51 |
| 50 | 16 |
| 52 | 3 |
| 53 | 1 |
Sum of 7 digit primes
| Sum | count |
| 4 | 5 |
| 5 | 21 |
| 7 | 95 |
| 8 | 138 |
| 10 | 420 |
| 11 | 773 |
| 13 | 1747 |
| 14 | 2329 |
| 16 | 4616 |
| 17 | 6456 |
| 19 | 10496 |
| 20 | 12743 |
| 22 | 18710 |
| 23 | 22447 |
| 25 | 29209 |
| 26 | 32075 |
| 28 | 38631 |
| 29 | 41150 |
| 31 | 44442 |
| 32 | 44915 |
| 34 | 44025 |
| 35 | 42891 |
| 37 | 37872 |
| 38 | 35177 |
| 40 | 28462 |
| 41 | 24722 |
| 43 | 18033 |
| 44 | 15169 |
| 46 | 9903 |
| 47 | 7611 |
| 49 | 4220 |
| 50 | 3227 |
| 52 | 1599 |
| 53 | 959 |
| 55 | 387 |
| 56 | 283 |
| 58 | 87 |
| 59 | 31 |
| 61 | 4 |
| 62 | 1 |
Sum of 8 digit primes
| Sum | count |
| 4 | 4 |
| 5 | 24 |
| 7 | 154 |
| 8 | 212 |
| 10 | 787 |
| 11 | 1705 |
| 13 | 4214 |
| 14 | 5721 |
| 16 | 12546 |
| 17 | 19040 |
| 19 | 34639 |
| 20 | 43707 |
| 22 | 71879 |
| 23 | 92223 |
| 25 | 135728 |
| 26 | 155461 |
| 28 | 207991 |
| 29 | 239885 |
| 31 | 290527 |
| 32 | 308077 |
| 34 | 342616 |
| 35 | 361131 |
| 37 | 369562 |
| 38 | 359649 |
| 40 | 340025 |
| 41 | 329342 |
| 43 | 285616 |
| 44 | 255417 |
| 46 | 202540 |
| 47 | 180681 |
| 49 | 131074 |
| 50 | 105061 |
| 52 | 68902 |
| 53 | 56183 |
| 55 | 32950 |
| 56 | 23410 |
| 58 | 11766 |
| 59 | 9033 |
| 61 | 3957 |
| 62 | 2082 |
| 64 | 718 |
| 65 | 468 |
| 67 | 128 |
| 68 | 37 |
| 71 | 4 |
Sum of 9 digit primes
| Sum | count |
| 4 | 2 |
| 5 | 26 |
| 7 | 226 |
| 8 | 372 |
| 10 | 1457 |
| 11 | 3312 |
| 13 | 9159 |
| 14 | 13320 |
| 16 | 32077 |
| 17 | 50752 |
| 19 | 102027 |
| 20 | 138554 |
| 22 | 249053 |
| 23 | 331920 |
| 25 | 535444 |
| 26 | 655423 |
| 28 | 966278 |
| 29 | 1152057 |
| 31 | 1546854 |
| 32 | 1751100 |
| 34 | 2168566 |
| 35 | 2374001 |
| 37 | 2719026 |
| 38 | 2850784 |
| 40 | 3029814 |
| 41 | 3063907 |
| 43 | 3019100 |
| 44 | 2943918 |
| 46 | 2691740 |
| 47 | 2519884 |
| 49 | 2134422 |
| 50 | 1930862 |
| 52 | 1511648 |
| 53 | 1303187 |
| 55 | 935353 |
| 56 | 783315 |
| 58 | 514221 |
| 59 | 402227 |
| 61 | 238252 |
| 62 | 182466 |
| 64 | 97415 |
| 65 | 66012 |
| 67 | 30140 |
| 68 | 21162 |
| 70 | 8438 |
| 71 | 4350 |
| 73 | 1311 |
| 74 | 906 |
| 76 | 170 |
| 77 | 65 |
| 79 | 3 |
| 80 | 1 |