Prime p₀= 1172812645612352509 starts a Symmetric tuple of 18 consecutive primes (SPT).
d_n: 0 4 18 56 6 6 30 82 18 32 18 82 30 6 6 56 18 4 (?)
a_n: 0 4 22 78 84 90 120 202 220 252 270 352 382 388 394 450 468 472
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: 472
Found by: HenkM
db: batch=77, k=18, 4 18 56 6 6 30 82 18 32

SPT(16)	1172810424605433979	0 30 40 58 78 84 88 124 144 180 184 190 210 228 238 268	-2221006918530
STPT(10)	1172810476048715561	0 2 30 32 78 80 126 128 156 158	-2169563636948
STPT(10)	1172810721503674007	0 2 30 32 42 44 54 56 84 86	-1924108678502
STPT(10)	1172811333005790167	0 2 30 32 42 44 54 56 84 86	-1312606562342
SPT(16)	1172811333254958197	0 42 50 66 80 132 140 182 204 246 254 306 320 336 344 386	-1312357394312
STPT(10)	1172811995931726119	0 2 12 14 30 32 48 50 60 62	-649680626390
STPT(10)	1172812816716238931	0 2 36 38 78 80 120 122 156 158	171103886422
STPT(10)	1172813010789576851	0 2 36 38 78 80 120 122 156 158	365177224342
SPT(16)	1172813058906655277	0 12 42 56 86 96 116 150 326 360 380 390 420 434 464 476	413294302768
SPT(16)	1172813167458711421	0 40 48 60 88 90 102 142 156 196 208 210 238 250 258 298	521846358912
SPT(16)	1172813245753015007	0 50 92 96 102 110 170 176 246 252 312 320 326 330 372 422	600140662498