Prime p₀= 2993686940186258333 starts a Symmetric tuple of 18 consecutive primes (SPT).
d_n: 0 8 16 6 14 6 28 32 10 104 10 32 28 6 14 6 16 8 (?)
a_n: 0 8 24 30 44 50 78 110 120 224 234 266 294 300 314 320 336 344
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: 344
Found by: Orange Kid
db: batch=82, k=18, 8 16 6 14 6 28 32 10 104

STPT(10)	2993685104205567767	0 2 30 32 72 74 114 116 144 146	-1835980690566
TPT(14)	2993685459721317239	0 2 72 74 90 92 132 134 168 170 180 182 228 230	-1480464941094
STPT(10)	2993685515109790619	0 2 18 20 30 32 42 44 60 62	-1425076467714
STPT(10)	2993685934870353587	0 2 42 44 72 74 102 104 144 146	-1005315904746
SPT(16)	2993686180997126057	0 20 56 132 174 212 224 260 336 372 384 422 464 540 576 596	-759189132276
SPT(16)	2993686785306881981	0 6 36 56 62 78 80 116 192 228 230 246 252 272 302 308	-154879376352
SPT(18)	2993687162600435011	0 22 60 78 88 96 130 190 196 222 228 288 322 330 340 358 396 418	222414176678
SPT(16)	2993687180640341851	0 12 22 30 52 72 78 100 108 130 136 156 178 186 196 208	240454083518
STPT(10)	2993687365986279167	0 2 30 32 102 104 174 176 204 206	425800020834
STPT(10)	2993687369086924397	0 2 24 26 42 44 60 62 84 86	428900666064
SPT(16)	2993687478480588541	0 18 22 66 136 142 156 166 252 262 276 282 352 396 400 418	538294330208