Prime p₀= 974692007656837607 starts a Symmetric tuple of 13 consecutive primes (SPT).
d_n: 0 12 18 30 30 6 60 60 6 30 30 18 12 (?)
a_n: 0 12 30 60 90 96 156 216 222 252 282 300 312
All 13 integers p_n = p₀+a_n = p_n-1+d_n are prime and there are no other primes in the gaps.
diameter: 312
Found by: Fardringle
db: batch=76, k=13, 12 18 30 30 6 60

SPT(16)	974690715096501919	0 22 40 48 70 88 124 130 162 168 204 222 244 252 270 292	-1292560335688
STPT(10)	974690741255684639	0 2 18 20 30 32 42 44 60 62	-1266401152968
SPT(16)	974691098207851697	0 14 24 26 32 36 60 110 126 176 200 204 210 212 222 236	-909448985910
SPT(16)	974691454765866619	0 12 42 48 64 88 118 124 168 174 204 228 244 250 280 292	-552890970988
STPT(10)	974691904358237069	0 2 12 14 90 92 168 170 180 182	-103298600538
SPT(16)	974691917252103251	0 26 108 120 138 158 168 180 188 200 210 230 248 260 342 368	-90404734356
SPT(16)	974692216598444599	0 24 78 94 124 138 150 154 204 208 220 234 264 280 334 358	208941606992
SPT(16)	974692349069707601	0 48 62 116 158 176 180 188 210 218 222 240 282 336 350 398	341412869994
SPT(16)	974692350923344981	0 36 48 58 72 76 82 142 186 246 252 256 270 280 292 328	343266507374
SPT(16)	974692504943102489	0 12 62 90 122 168 222 252 290 320 374 420 452 480 530 542	497286264882
STPT(10)	974692507083313859	0 2 78 80 120 122 162 164 240 242	499426476252