Prime p₀= 1309512796731675671 starts a Symmetric tuple of 20 consecutive primes (SPT).
d_n: 0 18 20 28 6 8 22 48 42 20 34 20 42 48 22 8 6 28 20 18 (?)
a_n: 0 18 38 66 72 80 102 150 192 212 246 266 308 356 378 386 392 420 440 458
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: 458
Found by: stoneageman
db: batch=77, k=20, 18 20 28 6 8 22 48 42 20 34

TPT(14)	1309512041322975599	0 2 18 20 30 32 102 104 282 284 420 422 432 434	-755408700072
SPT(16)	1309512121316480251	0 16 30 46 48 52 58 66 112 120 126 130 132 148 162 178	-675415195420
STPT(10)	1309512133062182261	0 2 36 38 78 80 120 122 156 158	-663669493410
STPT(10)	1309512373370844257	0 2 24 26 42 44 60 62 84 86	-423360831414
STPT(10)	1309512482138774699	0 2 42 44 60 62 78 80 120 122	-314592900972
SPT(16)	1309512694312719847	0 4 30 52 54 60 82 96 100 114 136 142 144 166 192 196	-102418955824
SPT(16)	1309512809954181757	0 30 60 70 106 144 184 220 240 276 316 354 390 400 430 460	13222506086
TPT(14)	1309513305128274887	0 2 12 14 42 44 90 92 174 176 222 224 240 242	508396599216
SPT(16)	1309513305770058239	0 32 42 54 60 90 102 104 168 170 182 212 218 230 240 272	509038382568
SPT(16)	1309513929438372643	0 24 118 126 144 160 208 256 258 306 354 370 388 396 490 514	1132706696972
STPT(10)	1309513982624280581	0 2 30 32 78 80 126 128 156 158	1185892604910