Prime p₀= 1816630275807540019 starts a Symmetric tuple of 18 consecutive primes (SPT).
d_n: 0 12 10 8 108 12 28 12 20 220 20 12 28 12 108 8 10 12 (?)
a_n: 0 12 22 30 138 150 178 190 210 430 450 462 490 502 610 618 628 640
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: 640
Found by: [AF] Kalianthys
db: batch=79, k=18, 12 10 8 108 12 28 12 20 220

SPT(16)	1816629261872237429	0 2 42 92 192 234 242 284 330 372 380 422 522 572 612 614	-1013935302590
SPT(16)	1816629763632963017	0 14 32 44 92 102 114 120 176 182 194 204 252 264 282 296	-512174577002
STPT(10)	1816629811653357689	0 2 18 20 30 32 42 44 60 62	-464154182330
STPT(10)	1816630001165493011	0 2 36 38 78 80 120 122 156 158	-274642047008
STPT(10)	1816630118975256437	0 2 30 32 72 74 114 116 144 146	-156832283582
SPT(16)	1816630254333435451	0 22 36 42 58 70 72 78 130 136 138 150 166 172 186 208	-21474104568
SPT(16)	1816630287409564489	0 10 18 22 70 78 108 148 174 214 244 252 300 304 312 322	11602024470
SPT(16)	1816630365919236667	0 30 34 42 46 70 120 144 172 196 246 270 274 282 286 316	90111696648
STPT(10)	1816630718167538477	0 2 12 14 42 44 72 74 84 86	442359998458
SPT(16)	1816631190983088581	0 8 38 62 72 132 138 212 216 290 296 356 366 390 420 428	915175548562
STPT(10)	1816631221660559177	0 2 30 32 42 44 54 56 84 86	945853019158