Prime p₀= 2221893877053856729 starts a Symmetric tuple of 16 consecutive primes (SPT).
d_n: 0 28 56 48 36 16 36 20 22 20 36 16 36 48 56 28 (?)
a_n: 0 28 84 132 168 184 220 240 262 282 318 334 370 418 474 502
All 16 integers p_n = p₀+a_n = p_n-1+d_n are prime and there are no other primes in the gaps.
diameter: 502
Found by: ginga
db: batch=81, k=16, 28 56 48 36 16 36 20 22

STPT(10)	2221893267574718081	0 2 36 38 78 80 120 122 156 158	-609479138648
SPT(16)	2221893329951483707	0 10 24 72 84 100 124 142 162 180 204 220 232 280 294 304	-547102373022
TPT(14)	2221893436469079491	0 2 18 20 30 32 60 62 96 98 138 140 150 152	-440584777238
STPT(10)	2221893654585838697	0 2 60 62 102 104 144 146 204 206	-222468018032
SPT(16)	2221893755831916953	0 20 24 48 86 108 114 174 380 440 446 468 506 530 534 554	-121221939776
SPT(16)	2221893875533429549	0 18 30 70 88 114 130 144 154 168 184 210 228 268 280 298	-1520427180
STPT(10)	2221894014298705259	0 2 42 44 60 62 78 80 120 122	137244848530
STPT(10)	2221894352088351929	0 2 18 20 30 32 42 44 60 62	475034495200
SPT(16)	2221894700732062513	0 24 34 48 70 94 136 138 196 198 240 264 286 300 310 334	823678205784
STPT(10)	2221894742295975629	0 2 42 44 120 122 198 200 240 242	865242118900
STPT(10)	2221895475039274631	0 2 36 38 78 80 120 122 156 158	1597985417902