Prime p₀= 2564258392782327341 starts a Symmetric tuple of 18 consecutive primes (SPT).
d_n: 0 20 22 8 120 22 6 18 2 22 2 18 6 22 120 8 22 20 (?)
a_n: 0 20 42 50 170 192 198 216 218 240 242 260 266 288 408 416 438 458
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: 458
Found by: JayPi
db: batch=82, k=18, 20 22 8 120 22 6 18 2 22

SPT(16)	2564257643809465783	0 28 64 78 90 100 156 226 438 508 564 574 586 600 636 664	-748972861558
SPT(16)	2564257940135402587	0 16 30 40 52 66 136 156 196 216 286 300 312 322 336 352	-452646924754
SPT(16)	2564258061354538543	0 46 64 106 150 180 186 228 256 298 304 334 378 420 438 484	-331427788798
SPT(16)	2564258073919955953	0 4 18 28 36 40 66 144 190 268 294 298 306 316 330 334	-318862371388
SPT(16)	2564258191280386709	0 8 12 38 98 104 110 122 150 162 168 174 234 260 264 272	-201501940632
STPT(10)	2564258241251036129	0 2 48 50 60 62 72 74 120 122	-151531291212
STPT(10)	2564258740015566437	0 2 30 32 42 44 54 56 84 86	347233239096
SPT(16)	2564259016435233191	0 6 98 138 182 228 230 242 246 258 260 306 350 390 482 488	623652905850
SPT(16)	2564259080964835871	0 30 38 60 80 86 126 138 140 152 192 198 218 240 248 278	688182508530
STPT(10)	2564259263955721217	0 2 30 32 42 44 54 56 84 86	871173393876
SPT(16)	2564259299880946037	0 12 42 140 192 212 240 242 264 266 294 314 366 464 494 506	907098618696