Prime p₀= 2712256171334371997 starts a Symmetric tuple of 18 consecutive primes (SPT).
d_n: 0 84 20 36 54 6 34 50 6 4 6 50 34 6 54 36 20 84 (?)
a_n: 0 84 104 140 194 200 234 284 290 294 300 350 384 390 444 480 500 584
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: 584
Found by: JayPi
db: batch=82, k=18, 84 20 36 54 6 34 50 6 4

STPT(12)	2712255472967798669	0 2 30 32 72 74 198 200 240 242 270 272	-698366573328
SPT(16)	2712255533514784897	0 22 52 66 82 132 162 190 222 250 280 330 346 360 390 412	-637819587100
SPT(16)	2712255572002117891	0 18 36 46 60 100 112 126 142 156 168 208 222 232 250 268	-599332254106
STPT(10)	2712255718887159629	0 2 30 32 60 62 90 92 120 122	-452447212368
STPT(10)	2712255829959863399	0 2 42 44 60 62 78 80 120 122	-341374508598
STPT(10)	2712255941581584491	0 2 36 38 78 80 120 122 156 158	-229752787506
SPT(16)	2712256243755895801	0 6 28 30 52 72 108 112 156 160 196 216 238 240 262 268	72421523804
SPT(16)	2712256826464992637	0 6 36 64 112 154 162 202 204 244 252 294 342 370 400 406	655130620640
STPT(10)	2712256989750766457	0 2 24 26 42 44 60 62 84 86	818416394460
SPT(16)	2712257174142618821	0 8 32 50 68 78 98 102 176 180 200 210 228 246 270 278	1002808246824
STPT(10)	2712257288287772957	0 2 30 32 42 44 54 56 84 86	1116953400960