Prime p₀= 998502762681963323 starts a Symmetric tuple of 18 consecutive primes (SPT).
d_n: 0 30 20 4 14 12 34 12 74 4 74 12 34 12 14 4 20 30 (?)
a_n: 0 30 50 54 68 80 114 126 200 204 278 290 324 336 350 354 374 404
All 18 integers p_n = p₀+a_n = p_n-1+d_n are prime and there are no other primes in the gaps.
diameter: 404
Found by: vinn@[CNT]
db: batch=76, k=18, 30 20 4 14 12 34 12 74 4

SPT(16)	998501050715901193	0 18 24 138 154 156 160 180 214 234 238 240 256 370 376 394	-1711966062130
SPT(16)	998501385117999421	0 10 18 28 46 52 70 72 136 138 156 162 180 190 198 208	-1377563963902
SPT(16)	998501457362932531	0 42 46 60 108 142 172 180 238 246 276 310 358 372 376 418	-1305319030792
SPT(16)	998501862163268803	0 6 46 64 90 244 324 330 334 340 420 574 600 618 658 664	-900518694520
SPT(16)	998501868879708371	0 2 62 90 122 126 168 180 308 320 362 366 398 426 486 488	-893802254952
SPT(16)	998502587864975899	0 4 58 102 184 210 234 252 280 298 322 348 430 474 528 532	-174816987424
STPT(10)	998503316681958677	0 2 72 74 102 104 132 134 204 206	553999995354
SPT(16)	998503524699231107	0 6 32 50 72 90 96 126 146 176 182 200 222 240 266 272	762017267784
SPT(16)	998503632253563881	0 12 48 90 98 168 186 236 252 302 320 390 398 440 476 488	869571600558
STPT(10)	998503705682557817	0 2 12 14 42 44 72 74 84 86	943000594494
SPT(16)	998503753140695749	0 54 72 78 120 132 138 204 258 324 330 342 384 390 408 462	990458732426