Prime p₀= 1281270699493224263 starts a Symmetric tuple of 18 consecutive primes (SPT).
d_n: 0 18 20 10 2 16 32 10 8 52 8 10 32 16 2 10 20 18 (?)
a_n: 0 18 38 48 50 66 98 108 116 168 176 186 218 234 236 246 266 284
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: 284
Found by: stoneageman
db: batch=77, k=18, 18 20 10 2 16 32 10 8 52

STPT(10)	1281268738076875487	0 2 30 32 60 62 90 92 120 122	-1961416348776
SPT(16)	1281269093083719967	0 12 34 76 90 106 126 156 160 190 210 226 240 282 304 316	-1606409504296
STPT(10)	1281269389869442229	0 2 12 14 90 92 168 170 180 182	-1309623782034
SPT(16)	1281269487682691867	0 6 12 26 84 86 104 114 122 132 150 152 210 224 230 236	-1211810532396
STPT(10)	1281269908390737449	0 2 18 20 30 32 42 44 60 62	-791102486814
STPT(10)	1281270678980917379	0 2 18 20 30 32 42 44 60 62	-20512306884
STPT(10)	1281270911566641551	0 2 6 8 48 50 90 92 96 98	212073417288
SPT(16)	1281270923295608951	0 18 60 66 72 90 96 168 170 242 248 266 272 278 320 338	223802384688
STPT(10)	1281271143166980107	0 2 72 74 102 104 132 134 204 206	443673755844
SPT(16)	1281271215974754239	0 32 42 78 92 98 144 180 182 218 264 270 284 320 330 362	516481529976
SPT(16)	1281271414815013337	0 36 44 114 150 156 200 206 210 216 260 266 302 372 380 416	715321789074