Prime p₀= 2127556526398506701 starts a Symmetric tuple of 18 consecutive primes (SPT).
d_n: 0 2 10 60 44 52 14 28 2 64 2 28 14 52 44 60 10 2 (?)
a_n: 0 2 12 72 116 168 182 210 212 276 278 306 320 372 416 476 486 488
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: 488
Found by: Donn Pike (USAF Ret)
db: batch=80, k=18, 2 10 60 44 52 14 28 2 64

STPT(10)	2127555362733900497	0 2 30 32 72 74 114 116 144 146	-1163664606204
SPT(16)	2127555863608384127	0 14 20 42 74 102 114 164 210 260 272 300 332 354 360 374	-662790122574
SPT(16)	2127555870710477639	0 12 32 54 84 152 158 174 188 204 210 278 308 330 350 362	-655688029062
SPT(16)	2127556008349604953	0 16 40 46 94 96 108 150 184 226 238 240 288 294 318 334	-518048901748
SPT(16)	2127556165398592829	0 14 24 50 62 104 108 138 344 374 378 420 432 458 468 482	-360999913872
STPT(10)	2127556244797110929	0 2 42 44 90 92 138 140 180 182	-281601395772
SPT(16)	2127556696220108717	0 50 56 102 110 116 134 144 212 222 240 246 254 300 306 356	169821602016
SPT(16)	2127556864477175281	0 36 118 126 192 210 238 250 288 300 328 346 412 420 502 538	338078668580
STPT(10)	2127557051385621017	0 2 30 32 42 44 54 56 84 86	524987114316
STPT(10)	2127557401116598667	0 2 60 62 72 74 84 86 144 146	874718091966
STPT(10)	2127557836275837521	0 2 6 8 48 50 90 92 96 98	1309877330820