Prime p₀= 508213507140069631 starts a Symmetric tuple of 20 consecutive primes (SPT).
d_n: 0 82 8 16 6 6 2 66 36 6 52 6 36 66 2 6 6 16 8 82 (?)
a_n: 0 82 90 106 112 118 120 186 222 228 280 286 322 388 390 396 402 418 426 508
All 20 integers p_n = p₀+a_n = p_n-1+d_n are prime and there are no other primes in the gaps.
diameter: 508
derived by truncating larger tuple
Found by: shiva
db: batch=48, k=20, 82 8 16 6 6 2 66 36 6 52

SPT(16)	508213401788798311	0 48 100 102 118 160 162 168 190 196 198 240 256 258 310 358	-105351271320
TPT(14)	508213450109805689	0 2 12 14 42 44 72 74 132 134 210 212 228 230	-57030263942
SPT(14)	508213476037197269	0 8 20 30 50 80 92 120 132 162 182 192 204 212	-31102872362
SPT(14)	508213476856899103	0 6 24 30 76 114 136 138 160 198 244 250 268 274	-30283170528
TPT(12)	508213503568919429	0 2 12 14 30 32 72 74 78 80 210 212	-3571150202
SPT(22)	508213507140069559	0 72 154 162 178 184 190 192 258 294 300 352 358 394 460 462 468 474 490 498 580 652	-72
TPT(12)	508213524941443169	0 2 258 260 300 302 330 332 492 494 498 500	17801373538
SPT(14)	508213538632672423	0 28 40 46 66 210 228 238 256 400 420 426 438 466	31492602792
SPT(14)	508213563088843043	0 20 24 48 54 84 138 146 200 230 236 260 264 284	55948773412
TPT(12)	508213565140401821	0 2 150 152 180 182 306 308 336 338 348 350	58000332190
SPT(14)	508213575575975909	0 38 78 90 92 104 132 170 198 210 212 224 264 302	68435906278
SPT(14)	508213586257179769	0 28 72 108 120 142 168 214 240 262 274 310 354 382	79117110138