Prime p₀= 1019851852393295731 starts a Symmetric tuple of 18 consecutive primes (SPT).
d_n: 0 10 78 30 44 48 6 6 10 44 10 6 6 48 44 30 78 10 (?)
a_n: 0 10 88 118 162 210 216 222 232 276 286 292 298 346 390 420 498 508
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: 508
Found by: Vitalii Koshura
db: batch=76, k=18, 10 78 30 44 48 6 6 10 44

SPT(16)	1019851347634060477	0 6 34 54 64 82 112 130 156 174 204 222 232 252 280 286	-504759235254
SPT(16)	1019851550369285989	0 12 18 54 60 78 102 112 180 190 214 232 238 274 280 292	-302024009742
STPT(10)	1019851553348724461	0 2 30 32 78 80 126 128 156 158	-299044571270
STPT(10)	1019851584540899807	0 2 54 56 72 74 90 92 144 146	-267852395924
SPT(16)	1019851627612873963	0 4 10 36 46 64 70 76 78 84 90 108 118 144 150 154	-224780421768
STPT(10)	1019851706573346347	0 2 30 32 42 44 54 56 84 86	-145819949384
SPT(18)	1019851922965656427	0 64 72 76 100 114 136 174 216 220 262 300 322 336 360 364 372 436	70572360696
SPT(16)	1019852410966608781	0 46 132 150 168 190 210 220 228 238 258 280 298 316 402 448	558573313050
STPT(10)	1019852415147793427	0 2 12 14 72 74 132 134 144 146	562754497696
STPT(12)	1019852483664327491	0 2 6 8 36 38 90 92 120 122 126 128	631271031760
STPT(10)	1019852514738158999	0 2 18 20 30 32 42 44 60 62	662344863268