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Prime Tuple Database
Prime p0= 398401367934494891 starts a
Symmetric tuple of 20 consecutive primes (SPT).
dn: 0 18 50 12 18 30 28 2 10 8 94 8 10 2 28 30 18 12 50 18 (?)
an: 0 18 68 80 98 128 156 158 168 176 270 278 288 290 318 348 366 378 428 446
All 20 integers pn = p0+an = pn-1+dn are prime and there are no other primes in the gaps.
diameter: 446
Found by: [SG-2W]Kurzer
db: batch=70, k=20, 18 50 12 18 30 28 2 10 8 94
dn: 0 18 50 12 18 30 28 2 10 8 94 8 10 2 28 30 18 12 50 18 (?)
an: 0 18 68 80 98 128 156 158 168 176 270 278 288 290 318 348 366 378 428 446
All 20 integers pn = p0+an = pn-1+dn are prime and there are no other primes in the gaps.
diameter: 446
Found by: [SG-2W]Kurzer
db: batch=70, k=20, 18 50 12 18 30 28 2 10 8 94
| SPT(16) | 398401283148948713 | 0 14 54 78 84 110 116 144 260 288 294 320 326 350 390 404 | -84785546178 |
| SPT(14) | 398401303975689257 | 0 26 36 62 92 96 110 126 140 144 174 200 210 236 | -63958805634 |
| SPT(14) | 398401304181419017 | 0 10 30 42 66 76 96 220 240 250 274 286 306 316 | -63753075874 |
| SPT(14) | 398401321535874161 | 0 8 50 150 162 182 198 212 228 248 260 360 402 410 | -46398620730 |
| SPT(14) | 398401322108494153 | 0 66 70 100 106 126 166 168 208 228 234 264 268 334 | -45826000738 |
| SPT(14) | 398401337890187209 | 0 18 30 42 130 138 174 208 244 252 340 352 364 382 | -30044307682 |
| SPT(14) | 398401377404873477 | 0 6 20 24 26 66 84 122 140 180 182 186 200 206 | 9470378586 |
| SPT(14) | 398401391414220839 | 0 14 24 32 50 68 74 78 84 102 120 128 138 152 | 23479725948 |
| SPT(14) | 398401407097272959 | 0 8 44 74 80 198 242 300 344 462 468 498 534 542 | 39162778068 |
| SPT(14) | 398401433183534449 | 0 4 30 58 70 168 172 180 184 282 294 322 348 352 | 65249039558 |
| TPT(12) | 398401451312155127 | 0 2 114 116 132 134 174 176 222 224 312 314 | 83377660236 |
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