Prime p₀= 1991307800706046481 starts a Symmetric tuple of 18 consecutive primes (SPT).
d_n: 0 60 6 62 34 18 26 16 14 16 14 16 26 18 34 62 6 60 (?)
a_n: 0 60 66 128 162 180 206 222 236 252 266 282 308 326 360 422 428 488
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: 488
Found by: [AF>Amis des Lapins] Phil1966
db: batch=80, k=18, 60 6 62 34 18 26 16 14 16

STPT(10)	1991305474651720499	0 2 18 20 30 32 42 44 60 62	-2326054325982
SPT(16)	1991306580361774399	0 40 48 54 58 78 100 180 352 432 454 474 478 484 492 532	-1220344272082
SPT(16)	1991307197607883993	0 6 34 40 48 90 94 96 208 210 214 256 264 270 298 304	-603098162488
SPT(16)	1991307416904637453	0 24 58 88 118 130 150 156 238 244 264 276 306 336 370 394	-383801409028
TPT(14)	1991307491142422669	0 2 12 14 108 110 150 152 168 170 192 194 210 212	-309563623812
SPT(16)	1991307600726326413	0 18 76 150 160 174 178 180 214 216 220 234 244 318 376 394	-199979720068
TPT(14)	1991307869117735867	0 2 54 56 114 116 210 212 264 266 270 272 312 314	68411689386
STPT(10)	1991308256425451399	0 2 42 44 60 62 78 80 120 122	455719404918
SPT(18)	1991308440414680741	0 6 12 78 90 96 102 110 132 146 168 176 182 188 200 266 272 278	639708634260
SPT(16)	1991308741696265821	0 18 36 42 60 216 240 246 252 258 282 438 456 462 480 498	940990219340
SPT(16)	1991308828954074239	0 30 42 78 84 108 122 198 254 330 344 368 374 410 422 452	1028248027758