Prime p₀= 218987803529031623 starts a Symmetric tuple of 20 consecutive primes (SPT).
d_n: 0 6 8 36 16 12 26 16 164 34 8 34 164 16 26 12 16 36 8 6 (?)
a_n: 0 6 14 50 66 78 104 120 284 318 326 360 524 540 566 578 594 630 638 644
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: 644
derived by truncating larger tuple
Found by: paulteo
db: batch=69, k=20, 6 8 36 16 12 26 16 164 34 8

SPT(14)	218987747153408201	0 26 36 42 68 72 92 126 146 150 176 182 192 218	-56375623422
SPT(14)	218987750228625803	0 38 84 110 116 138 150 194 206 228 234 260 306 344	-53300405820
SPT(14)	218987751386477617	0 22 60 64 76 90 120 136 166 180 192 196 234 256	-52142554006
TPT(12)	218987763771044909	0 2 132 134 168 170 180 182 252 254 390 392	-39757986714
TPT(12)	218987783846993429	0 2 30 32 48 50 90 92 132 134 162 164	-19682038194
SPT(22)	218987803529031619	0 4 10 18 54 70 82 108 124 288 322 330 364 528 544 570 582 598 634 642 648 652	-4
SPT(14)	218987830517322991	0 60 82 102 138 148 166 192 210 220 256 276 298 358	26988291368
TPT(12)	218987841693948419	0 2 30 32 42 44 72 74 78 80 120 122	38164916796
SPT(14)	218987848380980039	0 30 54 102 104 110 152 162 204 210 212 260 284 314	44851948416
TPT(12)	218987854454830037	0 2 42 44 54 56 132 134 150 152 192 194	50925798414
SPT(14)	218987881821198059	0 20 50 98 150 168 170 252 254 272 324 372 402 422	78292166436
SPT(14)	218987886033352637	0 6 14 50 60 102 132 194 224 266 276 312 320 326	82504321014