Prime p₀= 1255751603626633913 starts a Symmetric tuple of 20 consecutive primes (SPT).
d_n: 0 20 4 6 18 26 4 12 8 16 20 16 8 12 4 26 18 6 4 20 (?)
a_n: 0 20 24 30 48 74 78 90 98 114 134 150 158 170 174 200 218 224 228 248
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: 248
derived by truncating larger tuple
Found by: HenkM
db: batch=77, k=20, 20 4 6 18 26 4 12 8 16 20

STPT(10)	1255749933745472687	0 2 30 32 42 44 54 56 84 86	-1669881161226
STPT(10)	1255749977831646749	0 2 12 14 90 92 168 170 180 182	-1625794987164
TPT(14)	1255750474333518521	0 2 138 140 198 200 288 290 348 350 360 362 378 380	-1129293115392
STPT(10)	1255750770813093827	0 2 24 26 42 44 60 62 84 86	-832813540086
STPT(12)	1255751282377678901	0 2 66 68 78 80 138 140 150 152 216 218	-321248955012
SPT(22)	1255751603626633891	0 22 42 46 52 70 96 100 112 120 136 156 172 180 192 196 222 240 246 250 270 292	-22
SPT(16)	1255751675992834679	0 14 44 54 60 92 120 140 222 242 270 302 308 318 348 362	72366200766
STPT(10)	1255751707781750321	0 2 6 8 18 20 30 32 36 38	104155116408
SPT(16)	1255751937913915213	0 70 94 114 156 160 178 228 286 336 354 358 400 420 444 514	334287281300
STPT(10)	1255752074020520969	0 2 12 14 90 92 168 170 180 182	470393887056
STPT(10)	1255752463742047889	0 2 48 50 60 62 72 74 120 122	860115413976
STPT(10)	1255752580125023327	0 2 12 14 42 44 72 74 84 86	976498389414