Prime p₀= 2217211458750023479 starts a Symmetric tuple of 18 consecutive primes (SPT).
d_n: 0 42 16 6 8 36 42 22 6 26 6 22 42 36 8 6 16 42 (?)
a_n: 0 42 58 64 72 108 150 172 178 204 210 232 274 310 318 324 340 382
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: 382
Found by: Penguin
db: batch=81, k=18, 42 16 6 8 36 42 22 6 26

SPT(16)	2217209088176763643	0 46 58 88 100 114 118 120 154 156 160 174 186 216 228 274	-2370573259836
SPT(16)	2217209180240930653	0 18 70 88 148 156 180 186 208 214 238 246 306 324 376 394	-2278509092826
SPT(16)	2217210331601513317	0 72 76 102 154 156 210 216 280 286 340 342 394 420 424 496	-1127148510162
SPT(16)	2217210460755326833	0 16 30 34 40 76 130 156 184 210 264 300 306 310 324 340	-997994696646
TPT(14)	2217211006939048787	0 2 132 134 144 146 174 176 252 254 300 302 324 326	-451810974692
STPT(10)	2217211280170850627	0 2 42 44 72 74 102 104 144 146	-178579172852
SPT(16)	2217211651528928459	0 14 30 42 54 72 80 104 108 132 140 158 170 182 198 212	192778904980
STPT(10)	2217211663210609367	0 2 30 32 42 44 54 56 84 86	204460585888
TPT(14)	2217211823416960229	0 2 30 32 168 170 192 194 210 212 222 224 252 254	364666936750
SPT(16)	2217212049930575177	0 20 32 36 84 90 96 102 134 140 146 152 200 204 216 236	591180551698
STPT(10)	2217212069551146137	0 2 30 32 42 44 54 56 84 86	610801122658