Prime p₀= 1303811060477623031 starts a Symmetric tuple of 18 consecutive primes (SPT).
d_n: 0 6 2 4 36 30 18 14 28 2 28 14 18 30 36 4 2 6 (?)
a_n: 0 6 8 12 48 78 96 110 138 140 168 182 200 230 266 270 272 278
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: 278
Found by: HenkM
db: batch=77, k=18, 6 2 4 36 30 18 14 28 2

SPT(16)	1303809239471619869	0 24 32 42 72 104 108 120 212 224 228 260 290 300 308 332	-1821006003162
SPT(16)	1303809442029002443	0 36 66 106 108 160 174 190 204 220 234 286 288 328 358 394	-1618448620588
STPT(10)	1303809541729942571	0 2 36 38 78 80 120 122 156 158	-1518747680460
SPT(16)	1303810109197543547	0 20 54 92 110 132 152 222 314 384 404 426 444 482 516 536	-951280079484
STPT(10)	1303810225652191259	0 2 30 32 60 62 90 92 120 122	-834825431772
SPT(16)	1303810851418406579	0 2 20 98 132 138 230 260 342 372 464 470 504 582 600 602	-209059216452
SPT(16)	1303811959718923513	0 36 94 106 108 126 150 174 190 214 238 256 258 270 328 364	899241300482
STPT(10)	1303812260766111797	0 2 30 32 42 44 54 56 84 86	1200288488766
STPT(12)	1303812376170644399	0 2 42 44 48 50 132 134 138 140 180 182	1315693021368
SPT(16)	1303812649453623641	0 2 26 62 80 96 132 138 140 146 182 198 216 252 276 278	1588976000610
SPT(16)	1303812825476925971	0 18 30 56 86 120 126 162 176 212 218 252 282 308 320 338	1764999302940