Prime p₀= 1403602715217557453 starts a Symmetric tuple of 20 consecutive primes (SPT).
d_n: 0 26 18 4 20 6 10 42 2 12 4 12 2 42 10 6 20 4 18 26 (?)
a_n: 0 26 44 48 68 74 84 126 128 140 144 156 158 200 210 216 236 240 258 284
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: 284
derived by truncating larger tuple
Found by: vanos0512
db: batch=78, k=20, 26 18 4 20 6 10 42 2 12 4

STPT(10)	1403602146714404111	0 2 66 68 138 140 210 212 276 278	-568503153342
STPT(10)	1403602297098833729	0 2 18 20 60 62 102 104 120 122	-418118723724
STPT(10)	1403602569319397147	0 2 30 32 42 44 54 56 84 86	-145898160306
STPT(10)	1403602658816843897	0 2 24 26 42 44 60 62 84 86	-56400713556
STPT(10)	1403602688090774531	0 2 6 8 48 50 90 92 96 98	-27126782922
SPT(22)	1403602715217557411	0 42 68 86 90 110 116 126 168 170 182 186 198 200 242 252 258 278 282 300 326 368	-42
SPT(16)	1403602863284248157	0 12 42 60 90 126 242 266 276 300 416 452 482 500 530 542	148066690704
SPT(16)	1403603126144444441	0 6 42 60 62 72 86 110 258 282 296 306 308 326 362 368	410926886988
SPT(16)	1403603192158451231	0 12 36 62 96 126 140 182 216 258 272 302 336 362 386 398	476940893778
STPT(10)	1403603217755755451	0 2 78 80 138 140 198 200 276 278	502538197998
STPT(10)	1403603967792373349	0 2 30 32 60 62 90 92 120 122	1252574815896
TPT(16)	1403604349857383831	0 2 66 68 126 128 180 182 210 212 276 278 306 308 318 320	1634639826378