Prime p₀= 209617900242556271 starts a Symmetric tuple of 20 consecutive primes (SPT).
d_n: 0 30 12 50 4 14 46 24 8 24 94 24 8 24 46 14 4 50 12 30 (?)
a_n: 0 30 42 92 96 110 156 180 188 212 306 330 338 362 408 422 426 476 488 518
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
Found by: Ralfy
db: batch=69, k=20, 30 12 50 4 14 46 24 8 24 94

SPT(14)	209617813566736579	0 4 42 64 88 102 114 118 130 144 168 190 228 232	-86675819692
TPT(12)	209617827498466529	0 2 60 62 162 164 198 200 270 272 312 314	-72744089742
SPT(14)	209617831177581161	0 12 18 26 66 80 140 168 228 242 282 290 296 308	-69064975110
SPT(14)	209617857860722379	0 24 32 38 48 84 90 92 98 134 144 150 158 182	-42381833892
SPT(14)	209617863916224251	0 48 66 80 90 96 108 140 152 158 168 182 200 248	-36326332020
SPT(14)	209617886373786181	0 42 82 90 132 148 156 172 180 196 238 246 286 328	-13868770090
SPT(14)	209617902275995663	0 36 48 156 198 204 220 384 400 406 448 556 568 604	2033439392
SPT(14)	209617906639378673	0 8 14 18 30 36 78 86 128 134 146 150 156 164	6396822402
SPT(14)	209617949920086341	0 6 18 20 32 56 78 110 132 156 168 170 182 188	49677530070
TPT(12)	209617965180586979	0 2 30 32 78 80 102 104 120 122 132 134	64938030708
SPT(14)	209617972109494771	0 12 42 82 102 180 208 252 280 358 378 418 448 460	71866938500