Prime p₀= 1356121374140812801 starts a Symmetric tuple of 20 consecutive primes (SPT).
d_n: 0 42 18 58 2 66 10 42 48 2 52 2 48 42 10 66 2 58 18 42 (?)
a_n: 0 42 60 118 120 186 196 238 286 288 340 342 390 432 442 508 510 568 586 628
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: 628
Found by: Theadalus
db: batch=77, k=20, 42 18 58 2 66 10 42 48 2 52

STPT(10)	1356119482816204787	0 2 90 92 102 104 114 116 204 206	-1891324608014
SPT(16)	1356119515008427271	0 6 18 56 60 86 146 170 198 222 282 308 312 350 362 368	-1859132385530
STPT(10)	1356119844907957469	0 2 18 20 30 32 42 44 60 62	-1529232855332
STPT(10)	1356120011116244147	0 2 42 44 72 74 102 104 144 146	-1363024568654
STPT(10)	1356120556919392679	0 2 18 20 30 32 42 44 60 62	-817221420122
SPT(16)	1356120937945712857	0 22 34 42 52 84 90 94 102 106 112 144 154 162 174 196	-436195099944
SPT(16)	1356121565641983199	0 48 64 82 114 160 252 264 268 280 372 418 450 468 484 532	191501170398
SPT(16)	1356121864261290403	0 16 30 34 58 76 84 90 154 160 168 186 210 214 228 244	490120477602
SPT(16)	1356122869942158889	0 54 72 88 124 132 142 154 228 240 250 258 294 310 328 382	1495801346088
STPT(10)	1356123102893177501	0 2 36 38 78 80 120 122 156 158	1728752364700
SPT(16)	1356123137481137807	0 6 56 152 182 200 242 266 396 420 462 480 510 606 656 662	1763340325006