Prime p₀= 999230602556927647 starts a Symmetric tuple of 13 consecutive primes (SPT).
d_n: 0 12 48 30 12 24 30 30 24 12 30 48 12 (?)
a_n: 0 12 60 90 102 126 156 186 210 222 252 300 312
All 13 integers p_n = p₀+a_n = p_n-1+d_n are prime and there are no other primes in the gaps.
diameter: 312
Found by: [SETI.USA]Tank_Master
db: batch=76, k=13, 12 48 30 12 24 30

SPT(16)	999230054299930441	0 6 48 60 88 132 150 156 172 178 196 240 268 280 322 328	-548256997206
SPT(16)	999230226939286099	0 18 64 84 102 142 174 184 258 268 300 340 358 378 424 442	-375617641548
STPT(10)	999230272435798691	0 2 36 38 78 80 120 122 156 158	-330121128956
SPT(20)	999230334097778593	0 4 16 24 46 70 90 94 108 118 126 136 150 154 174 198 220 228 240 244	-268459149054
STPT(10)	999230470890493739	0 2 18 20 60 62 102 104 120 122	-131666433908
SPT(16)	999230494160325281	0 2 12 38 78 110 128 140 180 192 210 242 282 308 318 320	-108396602366
SPT(16)	999230636077256533	0 16 40 46 60 90 100 178 216 294 304 334 348 354 378 394	33520328886
SPT(16)	999231100905443321	0 38 42 48 80 110 128 230 318 420 438 468 500 506 510 548	498348515674
SPT(16)	999231143526717301	0 22 76 82 100 132 142 156 256 270 280 312 330 336 390 412	540969789654
SPT(16)	999231282426940351	0 28 46 76 78 88 90 96 202 208 210 220 222 252 270 298	679870012704
STPT(10)	999232062794146637	0 2 30 32 42 44 54 56 84 86	1460237218990