Prime p₀= 2170499196803917513 starts a Symmetric tuple of 18 consecutive primes (SPT).
d_n: 0 30 6 34 66 48 6 6 80 52 80 6 6 48 66 34 6 30 (?)
a_n: 0 30 36 70 136 184 190 196 276 328 408 414 420 468 534 568 574 604
All 18 integers p_n = p₀+a_n = p_n-1+d_n are prime and there are no other primes in the gaps.
diameter: 604
Found by: Rantanplan
db: batch=81, k=18, 30 6 34 66 48 6 6 80 52

SPT(16)	2170497889467702407	0 2 12 42 60 72 86 110 132 156 170 182 200 230 240 242	-1307336215106
STPT(10)	2170498236202641641	0 2 6 8 18 20 30 32 36 38	-960601275872
STPT(10)	2170498589920220471	0 2 6 8 18 20 30 32 36 38	-606883697042
SPT(16)	2170498650180128293	0 28 34 70 78 88 90 120 124 154 156 166 174 210 216 244	-546623789220
STPT(10)	2170498861907563469	0 2 18 20 60 62 102 104 120 122	-334896354044
STPT(10)	2170499107406158337	0 2 54 56 72 74 90 92 144 146	-89397759176
SPT(16)	2170499462338830877	0 24 64 66 72 100 106 126 130 150 156 184 190 192 232 256	265534913364
STPT(10)	2170499859801780497	0 2 42 44 72 74 102 104 144 146	662997862984
SPT(16)	2170500438017533693	0 54 78 84 88 100 120 178 240 298 318 330 334 340 364 418	1241213616180
SPT(16)	2170501057903910729	0 12 32 60 110 140 144 174 308 338 342 372 422 450 470 482	1861099993216
STPT(10)	2170501158635096447	0 2 30 32 42 44 54 56 84 86	1961831178934