Prime p₀= 215847563118887881 starts a Symmetric tuple of 20 consecutive primes (SPT).
d_n: 0 10 66 36 56 30 12 18 12 12 34 12 12 18 12 30 56 36 66 10 (?)
a_n: 0 10 76 112 168 198 210 228 240 252 286 298 310 328 340 370 426 462 528 538
All 20 integers p_n = p₀+a_n = p_n-1+d_n are prime and there are no other primes in the gaps.
diameter: 538
derived by truncating larger tuple
Found by: Megacruncher
db: batch=69, k=20, 10 66 36 56 30 12 18 12 12 34

TPT(12)	215847523721738891	0 2 6 8 78 80 108 110 138 140 180 182	-39397148990
SPT(14)	215847525329552509	0 18 72 82 108 138 144 148 154 184 210 220 274 292	-37789335372
TPT(12)	215847548058668411	0 2 18 20 90 92 138 140 198 200 216 218	-15060219470
TPT(12)	215847548220403481	0 2 48 50 90 92 156 158 180 182 186 188	-14898484400
SPT(14)	215847562820018057	0 32 90 92 104 140 162 164 186 222 234 236 294 326	-298869824
SPT(22)	215847563118887849	0 32 42 108 144 200 230 242 260 272 284 318 330 342 360 372 402 458 494 560 570 602	-32
TPT(12)	215847566940013691	0 2 90 92 138 140 216 218 258 260 300 302	3821125810
TPT(12)	215847571594818659	0 2 108 110 210 212 270 272 390 392 408 410	8475930778
TPT(12)	215847574800779429	0 2 48 50 60 62 138 140 180 182 222 224	11681891548
SPT(14)	215847577809353183	0 14 18 26 78 96 110 144 158 176 228 236 240 254	14690465302
TPT(12)	215847590926827917	0 2 24 26 30 32 54 56 204 206 234 236	27807940036
SPT(14)	215847598819174193	0 20 48 50 104 126 180 254 308 330 384 386 414 434	35700286312