Prime p₀= 2539927525590910277 starts a Symmetric tuple of 18 consecutive primes (SPT).
d_n: 0 56 30 30 24 42 28 30 2 28 2 30 28 42 24 30 30 56 (?)
a_n: 0 56 86 116 140 182 210 240 242 270 272 302 330 372 396 426 456 512
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: 512
Found by: JayPi
db: batch=82, k=18, 56 30 30 24 42 28 30 2 28

SPT(16)	2539924922560263481	0 12 22 42 102 126 136 148 150 162 172 196 256 276 286 298	-2603030646796
STPT(10)	2539925420557943531	0 2 36 38 78 80 120 122 156 158	-2105032966746
STPT(10)	2539926093427443689	0 2 12 14 90 92 168 170 180 182	-1432163466588
STPT(10)	2539926116644468379	0 2 18 20 60 62 102 104 120 122	-1408946441898
STPT(10)	2539926181292283137	0 2 12 14 72 74 132 134 144 146	-1344298627140
SPT(16)	2539926655503244321	0 12 18 30 72 90 100 132 136 168 178 196 238 250 256 268	-870087665956
SPT(16)	2539928147746661389	0 22 54 102 138 144 172 190 222 240 268 274 310 358 390 412	622155751112
SPT(16)	2539928320135499323	0 46 60 70 78 88 94 136 228 270 276 286 294 304 318 364	794544589046
STPT(10)	2539928517415482329	0 2 48 50 90 92 132 134 180 182	991824572052
TPT(14)	2539928743699156991	0 2 60 62 150 152 198 200 240 242 390 392 396 398	1218108246714
STPT(10)	2539928785119787067	0 2 30 32 42 44 54 56 84 86	1259528876790