Prime p₀= 1621853285427761987 starts a Symmetric tuple of 20 consecutive primes (SPT).
d_n: 0 2 4 14 124 12 8 78 34 8 148 8 34 78 8 12 124 14 4 2 (?)
a_n: 0 2 6 20 144 156 164 242 276 284 432 440 474 552 560 572 696 710 714 716
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: 716
Found by: Spectrum
db: batch=78, k=20, 2 4 14 124 12 8 78 34 8 148

SPT(16)	1621851938917165763	0 30 48 54 68 78 98 104 114 120 140 150 164 170 188 218	-1346510596224
STPT(10)	1621851998179214687	0 2 30 32 72 74 114 116 144 146	-1287248547300
STPT(10)	1621852321303237337	0 2 30 32 42 44 54 56 84 86	-964124524650
SPT(16)	1621852443516799787	0 12 42 54 96 140 144 174 242 272 276 320 362 374 404 416	-841910962200
STPT(10)	1621853123822944721	0 2 36 38 78 80 120 122 156 158	-161604817266
STPT(10)	1621853254473172067	0 2 12 14 42 44 72 74 84 86	-30954589920
TPT(14)	1621853444942596421	0 2 78 80 90 92 96 98 138 140 180 182 246 248	159514834434
SPT(16)	1621853492185202453	0 80 104 114 128 134 146 158 216 228 240 246 260 270 294 374	206757440466
SPT(16)	1621853598308763749	0 12 14 42 72 108 114 128 264 278 284 320 350 378 380 392	312881001762
TPT(14)	1621853770809437747	0 2 84 86 114 116 180 182 234 236 240 242 372 374	485381675760
STPT(10)	1621854188340407237	0 2 60 62 72 74 84 86 144 146	902912645250