Prime p₀= 917312970586315931 starts a Symmetric tuple of 18 consecutive primes (SPT).
d_n: 0 6 14 30 16 2 40 24 8 118 8 24 40 2 16 30 14 6 (?)
a_n: 0 6 20 50 66 68 108 132 140 258 266 290 330 332 348 378 392 398
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: 398
Found by: Theadalus
db: batch=76, k=18, 6 14 30 16 2 40 24 8 118

SPT(16)	917311156906164817	0 4 10 12 34 42 52 54 130 132 142 150 172 174 180 184	-1813680151114
SPT(16)	917312072388212759	0 20 38 44 68 84 98 104 108 114 128 144 168 174 192 212	-898198103172
STPT(10)	917312117263070717	0 2 24 26 42 44 60 62 84 86	-853323245214
STPT(10)	917312254575015191	0 2 6 8 48 50 90 92 96 98	-716011300740
SPT(16)	917312497190325781	0 6 18 28 48 58 76 100 156 180 198 208 228 238 250 256	-473395990150
SPT(16)	917312683174118383	0 36 48 54 64 76 126 150 304 328 378 390 400 406 418 454	-287412197548
SPT(16)	917313005046129833	0 26 38 50 96 98 120 180 194 254 276 278 324 336 348 374	34459813902
SPT(16)	917313790992489469	0 42 60 118 160 168 222 250 300 328 382 390 432 490 508 550	820406173538
STPT(10)	917313847981600337	0 2 30 32 72 74 114 116 144 146	877395284406
SPT(16)	917314289577216077	0 26 84 110 120 140 156 176 204 224 240 260 270 296 354 380	1318990900146
STPT(10)	917314350011592809	0 2 48 50 90 92 132 134 180 182	1379425276878