Prime p₀= 2993775698527936493 starts a Symmetric tuple of 18 consecutive primes (SPT).
d_n: 0 56 120 12 42 34 26 16 50 22 50 16 26 34 42 12 120 56 (?)
a_n: 0 56 176 188 230 264 290 306 356 378 428 444 470 504 546 558 678 734
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: 734
Found by: Orange Kid
db: batch=82, k=18, 56 120 12 42 34 26 16 50 22

SPT(18)	2993774610217142309	0 8 18 42 48 50 62 68 78 122 132 138 150 152 158 182 192 200	-1088310794184
STPT(10)	2993774990196202517	0 2 30 32 42 44 54 56 84 86	-708331733976
SPT(16)	2993775041638436171	0 20 26 48 50 56 78 86 180 188 210 216 218 240 246 266	-656889500322
SPT(16)	2993775064582944403	0 4 40 124 130 150 168 178 210 220 238 258 264 348 384 388	-633944992090
SPT(16)	2993775230761108081	0 12 16 18 22 126 136 172 246 282 292 396 400 402 406 418	-467766828412
SPT(16)	2993775272999462323	0 10 36 66 106 120 126 130 204 208 214 228 268 298 324 334	-425528474170
SPT(16)	2993775759643772617	0 24 70 72 94 100 114 132 142 160 174 180 202 204 250 274	61115836124
SPT(16)	2993776301767920101	0 20 80 86 102 132 156 168 170 182 206 236 252 258 318 338	603239983608
SPT(16)	2993776365254195497	0 4 16 30 34 36 96 126 160 190 250 252 256 270 282 286	666726259004
SPT(16)	2993776384252745243	0 8 18 48 50 78 98 110 216 228 248 276 278 308 318 326	685724808750
SPT(16)	2993776560824127311	0 6 60 62 120 162 168 186 272 290 296 338 396 398 452 458	862296190818