Prime p₀= 1561012098387537799 starts a Symmetric tuple of 18 consecutive primes (SPT).
d_n: 0 40 14 10 56 4 14 10 6 20 6 10 14 4 56 10 14 40 (?)
a_n: 0 40 54 64 120 124 138 148 154 174 180 190 204 208 264 274 288 328
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: 328
Found by: Spectrum
db: batch=78, k=18, 40 14 10 56 4 14 10 6 20

SPT(16)	1561010569092751471	0 28 78 106 112 118 132 190 198 256 270 276 282 310 360 388	-1529294786328
SPT(16)	1561011133868149219	0 28 42 72 112 168 172 198 214 240 244 300 340 370 384 412	-964519388580
STPT(10)	1561011692150141027	0 2 30 32 42 44 54 56 84 86	-406237396772
SPT(16)	1561011764901704239	0 40 48 108 132 138 168 190 222 244 274 280 304 364 372 412	-333485833560
STPT(10)	1561011859324209947	0 2 30 32 72 74 114 116 144 146	-239063327852
SPT(16)	1561011959826044477	0 14 30 86 90 114 156 164 222 230 272 296 300 356 372 386	-138561493322
TPT(14)	1561012361471022041	0 2 96 98 150 152 240 242 288 290 306 308 360 362	263083484242
SPT(16)	1561012720727327603	0 8 30 50 66 68 80 108 128 156 168 170 186 206 228 236	622339789804
STPT(10)	1561012733657836799	0 2 18 20 30 32 42 44 60 62	635270299000
SPT(16)	1561013006162593747	0 10 22 60 64 70 112 114 142 144 186 192 196 234 246 256	907775055948
SPT(20)	1561013070287541109	0 12 40 70 154 204 222 250 270 274 288 292 312 340 358 408 492 522 550 562	971900003310