Prime p₀= 310402815525745577 starts a Symmetric tuple of 20 consecutive primes (SPT).
d_n: 0 6 14 54 46 14 6 24 16 62 52 62 16 24 6 14 46 54 14 6 (?)
a_n: 0 6 20 74 120 134 140 164 180 242 294 356 372 396 402 416 462 516 530 536
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: 536
derived by truncating larger tuple
Found by: Dr Who Fan
db: batch=70, k=20, 6 14 54 46 14 6 24 16 62 52

SPT(14)	310402751416616083	0 10 18 30 54 120 180 238 298 364 388 400 408 418	-64109129494
SPT(14)	310402761024032783	0 14 18 66 140 168 218 276 326 354 428 476 480 494	-54501712794
TPT(12)	310402795672435979	0 2 60 62 78 80 198 200 210 212 240 242	-19853309598
SPT(14)	310402804074748499	0 32 80 102 140 162 164 168 170 192 230 252 300 332	-11450997078
TPT(12)	310402804385105711	0 2 156 158 270 272 318 320 378 380 396 398	-11140639866
SPT(24)	310402815525745511	0 8 66 72 86 140 186 200 206 230 246 308 360 422 438 462 468 482 528 582 596 602 660 668	-66
SPT(14)	310402831846184783	0 44 54 68 200 228 236 258 266 294 426 440 450 494	16320439206
SPT(14)	310402841614149149	0 20 32 38 78 92 98 144 150 164 204 210 222 242	26088403572
TPT(12)	310402846361037707	0 2 12 14 30 32 54 56 60 62 90 92	30835292130
TPT(12)	310402854438497657	0 2 12 14 42 44 102 104 180 182 312 314	38912752080
SPT(14)	310402863845560903	0 4 16 60 96 114 154 156 196 214 250 294 306 310	48319815326
SPT(14)	310402870027755787	0 10 46 52 60 64 126 220 282 286 294 300 336 346	54502010210