Prime p₀= 939817047822131257 starts a Symmetric tuple of 18 consecutive primes (SPT).
d_n: 0 4 2 10 14 54 36 34 18 2 18 34 36 54 14 10 2 4 (?)
a_n: 0 4 6 16 30 84 120 154 172 174 192 226 262 316 330 340 342 346
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: 346
Found by: paulteo
db: batch=76, k=18, 4 2 10 14 54 36 34 18 2

SPT(16)	939815984195863417	0 40 84 112 132 142 144 154 312 322 324 334 354 382 426 466	-1063626267840
STPT(10)	939816092670096767	0 2 30 32 72 74 114 116 144 146	-955152034490
SPT(16)	939816214206219281	0 8 18 32 50 72 86 116 222 252 266 288 306 320 330 338	-833615911976
SPT(16)	939816657781056493	0 16 88 126 174 184 196 210 214 228 240 250 298 336 408 424	-390041074764
STPT(10)	939817021790884967	0 2 30 32 72 74 114 116 144 146	-26031246290
STPT(10)	939817039693722101	0 2 6 8 18 20 30 32 36 38	-8128409156
TPT(14)	939817259451367901	0 2 36 38 60 62 90 92 126 128 216 218 270 272	211629236644
STPT(10)	939817785620272409	0 2 42 44 90 92 138 140 180 182	737798141152
SPT(16)	939818235291067367	0 2 26 36 42 54 96 110 156 170 212 224 230 240 264 266	1187468936110
SPT(16)	939818398334670091	0 18 28 30 46 72 130 142 186 198 256 282 298 300 310 328	1350512538834
STPT(10)	939818411018344181	0 2 36 38 78 80 120 122 156 158	1363196212924