Prime p₀= 1295399862264244831 starts a Symmetric tuple of 13 consecutive primes (SPT).
d_n: 0 48 30 12 30 12 18 18 12 30 12 30 48 (?)
a_n: 0 48 78 90 120 132 150 168 180 210 222 252 300
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: 300
Found by: Cruncher Pete
db: batch=77, k=13, 48 30 12 30 12 18

SPT(16)	1295398028050063633	0 94 100 106 114 138 148 150 154 156 166 190 198 204 210 304	-1834214181198
STPT(10)	1295398106404541429	0 2 12 14 90 92 168 170 180 182	-1755859703402
SPT(16)	1295398675635918647	0 2 24 50 56 66 72 80 126 134 140 150 156 182 204 206	-1186628326184
STPT(10)	1295398735681557041	0 2 6 8 108 110 210 212 216 218	-1126582687790
SPT(16)	1295398813801675097	0 6 26 30 32 54 60 62 84 86 92 114 116 120 140 146	-1048462569734
STPT(10)	1295399642319053147	0 2 30 32 60 62 90 92 120 122	-219945191684
STPT(10)	1295399904963334127	0 2 12 14 42 44 72 74 84 86	42699089296
SPT(16)	1295399962352251123	0 34 36 46 78 84 90 118 156 184 190 196 228 238 240 274	100088006292
STPT(10)	1295400051308232929	0 2 48 50 90 92 132 134 180 182	189043988098
STPT(10)	1295400084415716269	0 2 48 50 90 92 132 134 180 182	222151471438
SPT(16)	1295400144804937979	0 2 42 44 110 114 152 164 210 222 260 264 330 332 372 374	282540693148