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Prime Tuple Database
Prime p0= 1991593253296431523 starts a
Symmetric tuple of 20 consecutive primes (SPT).
dn: 0 4 36 30 6 2 18 28 20 60 46 60 20 28 18 2 6 30 36 4 (?)
an: 0 4 40 70 76 78 96 124 144 204 250 310 330 358 376 378 384 414 450 454
All 20 integers pn = p0+an = pn-1+dn are prime and there are no other primes in the gaps.
diameter: 454
Found by: [AF>Amis des Lapins] Phil1966
db: batch=80, k=20, 4 36 30 6 2 18 28 20 60 46
dn: 0 4 36 30 6 2 18 28 20 60 46 60 20 28 18 2 6 30 36 4 (?)
an: 0 4 40 70 76 78 96 124 144 204 250 310 330 358 376 378 384 414 450 454
All 20 integers pn = p0+an = pn-1+dn are prime and there are no other primes in the gaps.
diameter: 454
Found by: [AF>Amis des Lapins] Phil1966
db: batch=80, k=20, 4 36 30 6 2 18 28 20 60 46
| SPT(16) | 1991591795100556981 | 0 72 76 106 120 126 148 156 202 210 232 238 252 282 286 358 | -1458195874542 |
| SPT(16) | 1991591804173773271 | 0 10 28 52 66 72 82 100 138 156 166 172 186 210 228 238 | -1449122658252 |
| STPT(10) | 1991591938634404199 | 0 2 18 20 30 32 42 44 60 62 | -1314662027324 |
| STPT(10) | 1991592391363572461 | 0 2 36 38 78 80 120 122 156 158 | -861932859062 |
| STPT(10) | 1991592898830544127 | 0 2 24 26 42 44 60 62 84 86 | -354465887396 |
| STPT(10) | 1991593233148288727 | 0 2 24 26 42 44 60 62 84 86 | -20148142796 |
| SPT(16) | 1991593763196169163 | 0 6 20 26 44 54 66 104 240 278 290 300 318 324 338 344 | 509899737640 |
| SPT(16) | 1991594022331520389 | 0 48 58 124 160 178 184 210 292 318 324 342 378 444 454 502 | 769035088866 |
| STPT(10) | 1991594823090452387 | 0 2 90 92 132 134 174 176 264 266 | 1569794020864 |
| STPT(10) | 1991595144782502401 | 0 2 6 8 18 20 30 32 36 38 | 1891486070878 |
| SPT(16) | 1991595432011337043 | 0 24 34 40 84 100 114 136 198 220 234 250 294 300 310 334 | 2178714905520 |
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