Prime p₀= 2515630415658522209 starts a Symmetric tuple of 18 consecutive primes (SPT).
d_n: 0 62 6 12 22 42 48 12 14 16 14 12 48 42 22 12 6 62 (?)
a_n: 0 62 68 80 102 144 192 204 218 234 248 260 308 350 372 384 390 452
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: 452
Found by: JayPi
db: batch=82, k=18, 62 6 12 22 42 48 12 14 16

SPT(13)	2515629075338145181	0 78 108 120 126 156 198 240 270 276 288 318 396	-1340320377028
STPT(12)	2515629097174815887	0 2 12 14 42 44 72 74 102 104 114 116	-1318483706322
STPT(10)	2515629508499136509	0 2 18 20 30 32 42 44 60 62	-907159385700
STPT(10)	2515629913611164561	0 2 30 32 78 80 126 128 156 158	-502047357648
SPT(16)	2515630022363614727	0 42 44 60 72 86 110 156 200 246 270 284 296 312 314 356	-393294907482
STPT(10)	2515630315313308901	0 2 36 38 78 80 120 122 156 158	-100345213308
SPT(16)	2515630590717483829	0 90 130 132 174 184 198 214 258 274 288 298 340 342 382 472	175058961620
SPT(16)	2515630634217093791	0 38 56 80 90 116 132 138 320 326 342 368 378 402 420 458	218558571582
SPT(16)	2515631119205321419	0 18 22 42 52 78 108 180 280 352 382 408 418 438 442 460	703546799210
SPT(16)	2515631254735305401	0 36 60 78 90 116 120 122 126 128 132 158 170 188 212 248	839076783192
SPT(18)	2515631417635015157	0 56 62 66 102 104 122 150 156 200 206 234 252 254 290 294 300 356	1001976492948