Prime p₀= 378313936941293861 starts a Symmetric tuple of 20 consecutive primes (SPT).
d_n: 0 2 4 56 30 84 4 2 40 8 58 8 40 2 4 84 30 56 4 2 (?)
a_n: 0 2 6 62 92 176 180 182 222 230 288 296 336 338 342 426 456 512 516 518
All 20 integers p_n = p₀+a_n = p_n-1+d_n are prime and there are no other primes in the gaps.
diameter: 518
derived by truncating larger tuple
Found by: Cruncher Pete
db: batch=70, k=20, 2 4 56 30 84 4 2 40 8 58

SPT(14)	378313893445251817	0 4 22 54 72 96 100 186 190 214 232 264 282 286	-43496042044
SPT(14)	378313900575823969	0 30 60 64 94 108 130 168 190 204 234 238 268 298	-36365469892
SPT(14)	378313918707521623	0 54 60 66 88 124 144 190 210 246 268 274 280 334	-18233772238
TPT(12)	378313925832696767	0 2 42 44 60 62 84 86 114 116 132 134	-11108597094
SPT(14)	378313929315328541	0 2 42 80 110 126 132 170 176 192 222 260 300 302	-7625965320
SPT(22)	378313936941293819	0 42 44 48 104 134 218 222 224 264 272 330 338 378 380 384 468 498 554 558 560 602	-42
SPT(14)	378313949943328741	0 16 18 28 46 72 82 156 166 192 210 220 222 238	13002034880
TPT(12)	378313952432538377	0 2 12 14 24 26 162 164 180 182 222 224	15491244516
SPT(14)	378313967798886577	0 64 96 126 132 190 196 210 216 274 280 310 342 406	30857592716
SPT(16)	378313970975279743	0 24 46 60 94 96 126 150 154 178 208 210 244 258 280 304	34033985882
TPT(12)	378313988327732879	0 2 30 32 102 104 132 134 198 200 288 290	51386439018
TPT(12)	378313990528845989	0 2 60 62 72 74 90 92 102 104 132 134	53587552128