Prime p₀= 2176209594923267899 starts a Symmetric tuple of 18 consecutive primes (SPT).
d_n: 0 30 4 14 24 42 30 6 84 4 84 6 30 42 24 14 4 30 (?)
a_n: 0 30 34 48 72 114 144 150 234 238 322 328 358 400 424 438 442 472
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: 472
Found by: [SG-FC] hl
db: batch=81, k=18, 30 4 14 24 42 30 6 84 4

SPT(16)	2176208874194151739	0 22 28 64 118 132 138 204 208 274 280 294 348 384 390 412	-720729116160
SPT(16)	2176209009675692239	0 10 28 30 34 78 100 112 120 132 154 198 202 204 222 232	-585247575660
SPT(16)	2176209030373041361	0 12 46 96 102 106 132 148 150 166 192 196 202 252 286 298	-564550226538
STPT(10)	2176209053051264549	0 2 48 50 90 92 132 134 180 182	-541872003350
SPT(16)	2176209136254200909	0 24 50 54 78 108 110 138 140 168 170 200 224 228 254 278	-458669066990
SPT(16)	2176209482350022159	0 134 162 164 204 210 248 260 342 354 392 398 438 440 468 602	-112573245740
SPT(16)	2176210130047362443	0 6 38 80 86 126 144 156 158 170 188 228 234 276 308 314	535124094544
STPT(10)	2176210319091815099	0 2 42 44 60 62 78 80 120 122	724168547200
STPT(12)	2176210623662565947	0 2 30 32 42 44 72 74 84 86 114 116	1028739298048
SPT(16)	2176211088474447187	0 10 30 34 70 100 132 144 160 172 204 234 270 274 294 304	1493551179288
SPT(16)	2176211099107145029	0 18 30 90 142 144 168 174 178 184 208 210 262 322 334 352	1504183877130