Prime p₀= 2776281931362786709 starts a Symmetric tuple of 13 consecutive primes (SPT).
d_n: 0 90 12 6 54 30 18 18 30 54 6 12 90 (?)
a_n: 0 90 102 108 162 192 210 228 258 312 318 330 420
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: 420
Found by: JayPi
db: batch=82, k=13, 90 12 6 54 30 18

STPT(10)	2776280978712660779	0 2 42 44 90 92 138 140 180 182	-952650125930
SPT(16)	2776281498597864403	0 18 90 108 126 150 198 214 240 256 304 328 346 364 436 454	-432764922306
STPT(10)	2776281696677578247	0 2 12 14 72 74 132 134 144 146	-234685208462
STPT(10)	2776281770676324899	0 2 18 20 30 32 42 44 60 62	-160686461810
STPT(10)	2776281811326283241	0 2 36 38 78 80 120 122 156 158	-120036503468
STPT(10)	2776281838870317101	0 2 30 32 78 80 126 128 156 158	-92492469608
STPT(10)	2776282111974227609	0 2 18 20 30 32 42 44 60 62	180611440900
STPT(10)	2776282115668520057	0 2 30 32 42 44 54 56 84 86	184305733348
SPT(16)	2776282224165870587	0 30 56 66 156 170 194 230 300 336 360 374 464 474 500 530	292803083878
STPT(10)	2776282359329056547	0 2 30 32 72 74 114 116 144 146	427966269838
SPT(16)	2776282464289285267	0 30 46 64 72 144 156 214 222 280 292 364 372 390 406 436	532926498558