Prime p₀= 3091610970953342507 starts a Symmetric tuple of 18 consecutive primes (SPT).
d_n: 0 42 12 12 26 12 16 6 20 34 20 6 16 12 26 12 12 42 (?)
a_n: 0 42 54 66 92 104 120 126 146 180 200 206 222 234 260 272 284 326
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: 326
Found by: PhilTheNet
db: batch=83, k=18, 42 12 12 26 12 16 6 20 34

SPT(16)	3091609465840452343	0 30 106 156 160 168 178 196 198 216 226 234 238 288 364 394	-1505112890164
SPT(16)	3091609871638485019	0 12 54 60 64 70 72 78 124 130 132 138 142 148 190 202	-1099314857488
STPT(10)	3091609944445462379	0 2 42 44 60 62 78 80 120 122	-1026507880128
SPT(16)	3091609991161272761	0 12 20 48 50 140 152 188 222 258 270 360 362 390 398 410	-979792069746
TPT(14)	3091610240048902217	0 2 60 62 90 92 174 176 240 242 270 272 324 326	-730904440290
STPT(10)	3091610757499971137	0 2 54 56 72 74 90 92 144 146	-213453371370
TPT(14)	3091611220957084247	0 2 120 122 144 146 210 212 240 242 504 506 534 536	250003741740
SPT(16)	3091611726003504439	0 40 52 54 82 88 130 154 168 192 234 240 268 270 282 322	755050161932
STPT(10)	3091611901622391419	0 2 18 20 30 32 42 44 60 62	930669048912
STPT(10)	3091612534277539817	0 2 30 32 42 44 54 56 84 86	1563324197310
STPT(10)	3091612622252684597	0 2 12 14 42 44 72 74 84 86	1651299342090