Prime p₀= 2691536849687210197 starts a Symmetric tuple of 18 consecutive primes (SPT).
d_n: 0 22 38 10 30 2 108 84 22 14 22 84 108 2 30 10 38 22 (?)
a_n: 0 22 60 70 100 102 210 294 316 330 352 436 544 546 576 586 624 646
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: 646
Found by: biodoc
db: batch=82, k=18, 22 38 10 30 2 108 84 22 14

SPT(16)	2691535756137605483	0 18 38 108 116 138 144 150 254 260 266 288 296 366 386 404	-1093549604714
SPT(16)	2691535767746361127	0 22 72 114 124 130 172 174 280 282 324 330 340 382 432 454	-1081940849070
STPT(10)	2691536082199143209	0 2 42 44 120 122 198 200 240 242	-767488066988
STPT(10)	2691536262606682661	0 2 30 32 78 80 126 128 156 158	-587080527536
STPT(10)	2691536369143510697	0 2 54 56 72 74 90 92 144 146	-480543699500
SPT(16)	2691536826802156937	0 24 32 60 92 102 104 126 140 162 164 174 206 234 242 266	-22885053260
TPT(14)	2691537024491981717	0 2 30 32 60 62 132 134 162 164 204 206 240 242	174804771520
SPT(16)	2691537041987603419	0 10 30 52 100 102 130 154 210 234 262 264 312 334 354 364	192300393222
STPT(10)	2691537671174379227	0 2 30 32 72 74 114 116 144 146	821487169030
STPT(10)	2691537998314514519	0 2 18 20 30 32 42 44 60 62	1148627304322
STPT(10)	2691538070428765841	0 2 6 8 48 50 90 92 96 98	1220741555644