Prime p₀= 1934457349874839421 starts a Symmetric tuple of 18 consecutive primes (SPT).
d_n: 0 8 12 22 14 24 66 82 18 26 18 82 66 24 14 22 12 8 (?)
a_n: 0 8 20 42 56 80 146 228 246 272 290 372 438 462 476 498 510 518
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: 518
Found by: ChUcK
db: batch=80, k=18, 8 12 22 14 24 66 82 18 26

SPT(16)	1934456069009314853	0 14 30 44 56 114 140 158 186 204 230 288 300 314 330 344	-1280865524568
STPT(10)	1934456239474322747	0 2 30 32 42 44 54 56 84 86	-1110400516674
SPT(16)	1934456661773074409	0 38 68 98 104 144 152 218 234 300 308 348 354 384 414 452	-688101765012
SPT(16)	1934456709995976743	0 20 26 30 54 66 114 120 140 146 194 206 230 234 240 260	-639878862678
TPT(14)	1934456736976358981	0 2 36 38 66 68 78 80 156 158 180 182 198 200	-612898480440
TPT(14)	1934457154449206327	0 2 54 56 120 122 180 182 204 206 222 224 252 254	-195425633094
SPT(16)	1934457508397934067	0 6 22 60 126 132 136 172 174 210 214 220 286 324 340 346	158523094646
SPT(16)	1934457551116450813	0 10 18 48 78 94 144 166 258 280 330 346 376 406 414 424	201241611392
SPT(13)	1934457557620460563	0 54 78 120 138 144 174 204 210 228 270 294 348	207745621142
SPT(16)	1934457705041474407	0 4 42 54 64 90 130 144 190 204 244 270 280 292 330 334	355166634986
SPT(16)	1934458056655947931	0 6 10 12 28 66 150 168 190 208 292 330 346 348 352 358	706781108510