Prime p₀= 1489797599387894527 starts a Symmetric tuple of 20 consecutive primes (SPT).
d_n: 0 30 70 36 54 20 30 12 34 18 38 18 34 12 30 20 54 36 70 30 (?)
a_n: 0 30 100 136 190 210 240 252 286 304 342 360 394 406 436 456 510 546 616 646
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: 646
Found by: Theadalus
db: batch=78, k=20, 30 70 36 54 20 30 12 34 18 38

SPT(16)	1489796031793970323	0 10 30 114 124 156 180 196 234 250 274 306 316 400 420 430	-1567593924204
SPT(16)	1489796335586175251	0 50 66 120 150 176 180 182 186 188 192 218 248 302 318 368	-1263801719276
SPT(16)	1489796370517321051	0 6 16 28 58 78 106 108 118 120 148 168 198 210 220 226	-1228870573476
SPT(16)	1489797159144430271	0 6 50 66 90 92 108 218 240 350 366 368 392 408 452 458	-440243464256
STPT(10)	1489797339126819599	0 2 30 32 60 62 90 92 120 122	-260261074928
STPT(10)	1489797516563935721	0 2 6 8 18 20 30 32 36 38	-82823958806
SPT(16)	1489797703573515031	0 10 40 42 76 82 90 112 120 142 150 156 190 192 222 232	104185620504
STPT(10)	1489797832276050761	0 2 36 38 78 80 120 122 156 158	232888156234
STPT(10)	1489797902845467539	0 2 42 44 60 62 78 80 120 122	303457573012
STPT(10)	1489798139581495097	0 2 12 14 72 74 132 134 144 146	540193600570
SPT(16)	1489798638045819223	0 40 48 66 94 96 108 118 126 136 148 150 178 196 204 244	1038657924696