Prime p₀= 919256867321130517 starts a Symmetric tuple of 18 consecutive primes (SPT).
d_n: 0 12 34 8 6 16 36 2 12 4 12 2 36 16 6 8 34 12 (?)
a_n: 0 12 46 54 60 76 112 114 126 130 142 144 180 196 202 210 244 256
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: 256
Found by: raddoc
db: batch=76, k=18, 12 34 8 6 16 36 2 12 4

SPT(16)	919256171475064229	0 158 164 174 182 204 240 242 300 302 338 360 368 378 384 542	-695846066288
SPT(16)	919256314976745877	0 6 22 40 42 66 70 84 172 186 190 214 216 234 250 256	-552344384640
STPT(10)	919256394840110009	0 2 48 50 90 92 132 134 180 182	-472481020508
TPT(14)	919256489995487297	0 2 24 26 54 56 84 86 174 176 210 212 300 302	-377325643220
SPT(16)	919256543570286553	0 78 100 120 186 214 216 234 280 298 300 328 394 414 436 514	-323750843964
SPT(16)	919256678087431007	0 24 36 90 174 200 216 234 242 260 276 302 386 440 452 476	-189233699510
STPT(10)	919257186745022141	0 2 30 32 78 80 126 128 156 158	319423891624
TPT(14)	919257544295261291	0 2 30 32 108 110 168 170 198 200 288 290 306 308	676974130774
SPT(16)	919258133773333169	0 2 18 30 78 84 102 114 158 170 188 194 242 254 270 272	1266452202652
SPT(16)	919258288888828951	0 60 82 102 112 130 166 208 240 282 318 336 346 366 388 448	1421567698434
SPT(16)	919258824261701141	0 8 26 60 72 98 102 138 140 176 180 206 218 252 270 278	1956940570624