Prime p₀= 668089631440237189 starts a Symmetric tuple of 20 consecutive primes (SPT).
d_n: 0 120 30 34 8 6 10 6 18 18 2 18 18 6 10 6 8 34 30 120 (?)
a_n: 0 120 150 184 192 198 208 214 232 250 252 270 288 294 304 310 318 352 382 502
All 20 integers p_n = p₀+a_n = p_n-1+d_n are prime and there are no other primes in the gaps.
diameter: 502
derived by truncating larger tuple
Found by: scrap
db: batch=72, k=20, 120 30 34 8 6 10 6 18 18 2

TPT(14)	668089308573831299	0 2 78 80 210 212 240 242 330 332 348 350 420 422	-322866405890
SPT(16)	668089434637925057	0 14 20 60 90 120 182 200 216 234 296 326 356 396 402 416	-196802312132
TPT(12)	668089560668415287	0 2 84 86 204 206 252 254 414 416 420 422	-70771821902
STPT(10)	668089583863808177	0 2 30 32 42 44 54 56 84 86	-47576429012
SPT(18)	668089620992190823	0 46 48 60 66 76 88 100 108 118 126 138 150 160 166 178 180 226	-10448046366
SPT(22)	668089631440237157	0 32 152 182 216 224 230 240 246 264 282 284 302 320 326 336 342 350 384 414 534 566	-32
TPT(12)	668089647352619909	0 2 30 32 42 44 60 62 72 74 138 140	15912382720
TPT(12)	668089658887018931	0 2 6 8 36 38 66 68 96 98 120 122	27446781742
TPT(12)	668089745812591757	0 2 42 44 90 92 114 116 174 176 180 182	114372354568
TPT(12)	668089748963876849	0 2 42 44 78 80 120 122 150 152 162 164	117523639660
TPT(12)	668089808433292541	0 2 30 32 246 248 288 290 330 332 576 578	176993055352
SPT(16)	668089911075480571	0 30 52 60 130 150 208 210 280 282 340 360 430 438 460 490	279635243382