Prime p₀= 2086231548595358387 starts a Symmetric tuple of 18 consecutive primes (SPT).
d_n: 0 20 66 40 20 64 12 18 36 80 36 18 12 64 20 40 66 20 (?)
a_n: 0 20 86 126 146 210 222 240 276 356 392 410 422 486 506 546 612 632
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: 632
Found by: Ben
db: batch=80, k=18, 20 66 40 20 64 12 18 36 80

STPT(10)	2086228598656303877	0 2 12 14 42 44 72 74 84 86	-2949939054510
SPT(16)	2086229658322828367	0 72 104 110 116 122 126 144 152 170 174 180 186 192 224 296	-1890272530020
STPT(10)	2086230168564017051	0 2 36 38 78 80 120 122 156 158	-1380031341336
SPT(16)	2086230326231134879	0 42 64 112 132 162 174 190 234 250 262 292 312 360 382 424	-1222364223508
STPT(10)	2086230482454866981	0 2 30 32 78 80 126 128 156 158	-1066140491406
STPT(10)	2086230504628790489	0 2 12 14 30 32 48 50 60 62	-1043966567898
SPT(16)	2086231710639687209	0 14 92 114 128 134 140 180 242 282 288 294 308 330 408 422	162044328822
STPT(10)	2086231809979021217	0 2 42 44 102 104 162 164 204 206	261383662830
SPT(16)	2086232960405176201	0 6 66 72 100 108 112 126 142 156 160 168 196 202 262 268	1411809817814
STPT(10)	2086233105659555351	0 2 36 38 78 80 120 122 156 158	1557064196964
SPT(16)	2086233292580914637	0 44 72 90 132 182 212 222 224 234 264 314 356 374 402 446	1743985556250