Prime p₀= 2808350498123915923 starts a Symmetric tuple of 18 consecutive primes (SPT).
d_n: 0 6 22 12 8 36 6 4 32 22 32 4 6 36 8 12 22 6 (?)
a_n: 0 6 28 40 48 84 90 94 126 148 180 184 190 226 234 246 268 274
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: 274
Found by: [SG]ATA-Rolf
db: batch=82, k=18, 6 22 12 8 36 6 4 32 22

STPT(10)	2808349931930872487	0 2 12 14 72 74 132 134 144 146	-566193043436
SPT(16)	2808349938794523533	0 14 20 54 68 114 128 138 146 156 170 216 230 264 270 284	-559329392390
SPT(16)	2808350120624607931	0 22 78 102 108 126 166 172 186 192 232 250 256 280 336 358	-377499307992
SPT(16)	2808350142277582139	0 24 30 48 122 128 138 174 188 224 234 240 314 332 338 362	-355846333784
SPT(16)	2808350308554259957	0 10 34 46 52 82 102 112 144 154 174 204 210 222 246 256	-189569655966
SPT(16)	2808350435120369101	0 28 40 118 138 180 208 252 286 330 358 400 420 498 510 538	-63003546822
SPT(16)	2808350924876569771	0 46 96 136 150 156 180 210 238 268 292 298 312 352 402 448	426752653848
TPT(14)	2808350975461954691	0 2 66 68 108 110 150 152 156 158 168 170 198 200	477338038768
STPT(10)	2808351785159633927	0 2 30 32 42 44 54 56 84 86	1287035718004
SPT(16)	2808351892706367643	0 4 48 84 126 136 160 184 270 294 318 328 370 406 450 454	1394582451720
SPT(16)	2808352458001815103	0 10 54 78 100 114 148 150 184 186 220 234 256 280 324 334	1959877899180