Prime p₀= 1386959987889412241 starts a Symmetric tuple of 18 consecutive primes (SPT).
d_n: 0 42 6 2 12 16 42 18 14 4 14 18 42 16 12 2 6 42 (?)
a_n: 0 42 48 50 62 78 120 138 152 156 170 188 230 246 258 260 266 308
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: 308
Found by: Fornax
db: batch=77, k=18, 42 6 2 12 16 42 18 14 4

SPT(16)	1386958729275352229	0 2 12 42 68 140 168 170 192 194 222 294 320 350 360 362	-1258614060012
SPT(16)	1386959071430263789	0 12 108 132 168 174 208 238 384 414 448 454 490 514 610 622	-916459148452
STPT(12)	1386959418576919001	0 2 36 38 48 50 78 80 90 92 126 128	-569312493240
TPT(14)	1386959418576919001	0 2 36 38 48 50 78 80 90 92 126 128 168 170	-569312493240
SPT(16)	1386959717811931397	0 14 26 36 50 56 72 92 114 134 150 156 170 180 192 206	-270077480844
SPT(16)	1386959919448366283	0 14 80 98 104 138 146 158 216 228 236 270 276 294 360 374	-68441045958
TPT(14)	1386960285397473947	0 2 12 14 54 56 180 182 252 254 264 266 294 296	297508061706
STPT(12)	1386960373425288029	0 2 12 14 42 44 210 212 240 242 252 254	385535875788
STPT(10)	1386960582849077141	0 2 6 8 48 50 90 92 96 98	594959664900
SPT(16)	1386960585388325257	0 4 16 30 72 112 114 156 190 232 234 274 316 330 342 346	597498913016
STPT(10)	1386960928580413799	0 2 18 20 30 32 42 44 60 62	940691001558