Prime p₀= 2820470187102993851 starts a Symmetric tuple of 20 consecutive primes (SPT).
d_n: 0 2 24 4 30 26 30 16 8 46 50 46 8 16 30 26 30 4 24 2 (?)
a_n: 0 2 26 30 60 86 116 132 140 186 236 282 290 306 336 362 392 396 420 422
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: 422
Found by: Roadranner
db: batch=82, k=20, 2 24 4 30 26 30 16 8 46 50

STPT(10)	2820469126035160511	0 2 6 8 18 20 30 32 36 38	-1061067833340
SPT(16)	2820469296715750733	0 48 50 56 138 176 204 210 314 320 348 386 468 474 476 524	-890387243118
STPT(10)	2820469823862963497	0 2 30 32 42 44 54 56 84 86	-363240030354
SPT(16)	2820469873635138871	0 12 18 82 102 112 138 142 156 160 186 196 216 280 286 298	-313467854980
TPT(14)	2820469925987114519	0 2 18 20 180 182 240 242 282 284 312 314 360 362	-261115879332
SPT(16)	2820470169137468563	0 28 36 46 66 70 114 150 154 190 234 238 258 268 276 304	-17965525288
TPT(14)	2820470354124519791	0 2 78 80 90 92 120 122 156 158 210 212 270 272	167021525940
STPT(10)	2820470553005772767	0 2 42 44 72 74 102 104 144 146	365902778916
SPT(18)	2820470708423236501	0 6 10 42 66 150 156 196 202 240 246 286 292 376 400 432 436 442	521320242650
STPT(10)	2820470734013454407	0 2 54 56 72 74 90 92 144 146	546910460556
SPT(16)	2820471160870839431	0 18 72 90 96 116 170 198 200 228 282 302 308 326 380 398	973767845580