Prime p₀= 1264561219747065041 starts a Symmetric tuple of 18 consecutive primes (SPT).
d_n: 0 6 26 10 8 22 20 28 6 20 6 28 20 22 8 10 26 6 (?)
a_n: 0 6 32 42 50 72 92 120 126 146 152 180 200 222 230 240 266 272
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: 272
Found by: biodoc
db: batch=77, k=18, 6 26 10 8 22 20 28 6 20

STPT(10)	1264560575723483417	0 2 30 32 42 44 54 56 84 86	-644023581624
SPT(16)	1264560656798973979	0 22 60 70 82 112 124 202 210 288 300 330 342 352 390 412	-562948091062
STPT(10)	1264560717520428569	0 2 42 44 90 92 138 140 180 182	-502226636472
STPT(10)	1264560757033606127	0 2 30 32 42 44 54 56 84 86	-462713458914
STPT(10)	1264560828557667227	0 2 30 32 72 74 114 116 144 146	-391189397814
SPT(16)	1264561005344425211	0 8 26 62 78 128 132 140 168 176 180 230 246 282 300 308	-214402639830
STPT(10)	1264561510230995489	0 2 42 44 60 62 78 80 120 122	290483930448
SPT(18)	1264561609631383307	0 6 30 54 60 84 90 96 156 170 230 236 242 266 272 296 320 326	389884318266
STPT(10)	1264561618532642501	0 2 36 38 78 80 120 122 156 158	398785577460
SPT(16)	1264561835779849727	0 14 32 66 80 84 86 116 120 150 152 156 170 204 222 236	616032784686
STPT(10)	1264561852439881319	0 2 42 44 60 62 78 80 120 122	632692816278