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Prime Tuple Database
Prime p0= 1991390422813228397 starts a
Symmetric tuple of 18 consecutive primes (SPT).
dn: 0 30 6 20 4 14 66 34 18 32 18 34 66 14 4 20 6 30 (?)
an: 0 30 36 56 60 74 140 174 192 224 242 276 342 356 360 380 386 416
All 18 integers pn = p0+an = pn-1+dn are prime and there are no other primes in the gaps.
diameter: 416
Found by: [AF>Amis des Lapins] Phil1966
db: batch=80, k=18, 30 6 20 4 14 66 34 18 32
dn: 0 30 6 20 4 14 66 34 18 32 18 34 66 14 4 20 6 30 (?)
an: 0 30 36 56 60 74 140 174 192 224 242 276 342 356 360 380 386 416
All 18 integers pn = p0+an = pn-1+dn are prime and there are no other primes in the gaps.
diameter: 416
Found by: [AF>Amis des Lapins] Phil1966
db: batch=80, k=18, 30 6 20 4 14 66 34 18 32
| SPT(16) | 1991387988070487113 | 0 6 48 60 78 100 118 130 144 156 174 196 214 226 268 274 | -2434742741284 |
| STPT(10) | 1991388077002668317 | 0 2 30 32 42 44 54 56 84 86 | -2345810560080 |
| STPT(10) | 1991389054394552621 | 0 2 6 8 48 50 90 92 96 98 | -1368418675776 |
| SPT(16) | 1991389058399364677 | 0 56 62 110 146 152 162 186 260 284 294 300 336 384 390 446 | -1364413863720 |
| STPT(10) | 1991389665075576581 | 0 2 6 8 48 50 90 92 96 98 | -757737651816 |
| TPT(14) | 1991389922446002161 | 0 2 108 110 150 152 180 182 228 230 516 518 576 578 | -500367226236 |
| SPT(16) | 1991390475074061007 | 0 30 60 70 112 126 154 156 160 162 190 204 246 256 286 316 | 52260832610 |
| STPT(10) | 1991390709057773867 | 0 2 30 32 42 44 54 56 84 86 | 286244545470 |
| STPT(10) | 1991390779270524857 | 0 2 30 32 42 44 54 56 84 86 | 356457296460 |
| STPT(10) | 1991390807981185031 | 0 2 36 38 78 80 120 122 156 158 | 385167956634 |
| SPT(16) | 1991391824364241823 | 0 6 18 44 54 86 110 116 138 144 168 200 210 236 248 254 | 1401551013426 |
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