Prime p₀= 1990463680956031513 starts a Symmetric tuple of 18 consecutive primes (SPT).
d_n: 0 4 80 12 34 6 30 24 50 64 50 24 30 6 34 12 80 4 (?)
a_n: 0 4 84 96 130 136 166 190 240 304 354 378 408 414 448 460 540 544
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: 544
Found by: Dingo
db: batch=80, k=18, 4 80 12 34 6 30 24 50 64

STPT(10)	1990462950559151597	0 2 60 62 72 74 84 86 144 146	-730396879916
SPT(16)	1990463166082332449	0 2 30 50 54 72 74 78 134 138 140 158 162 182 210 212	-514873699064
SPT(16)	1990463185861459247	0 14 56 96 120 164 210 234 266 290 336 380 404 444 486 500	-495094572266
SPT(16)	1990463367906201641	0 6 32 60 66 78 96 98 270 272 290 302 308 336 362 368	-313049829872
TPT(14)	1990463443090053101	0 2 30 32 60 62 126 128 198 200 228 230 258 260	-237865978412
SPT(16)	1990463598403857517	0 6 30 66 72 106 132 154 162 184 210 244 250 286 310 316	-82552173996
STPT(10)	1990463823266239931	0 2 30 32 120 122 210 212 240 242	142310208418
SPT(16)	1990463825319493871	0 8 12 32 48 98 132 138 140 146 180 230 246 266 270 278	144363462358
SPT(16)	1990464014159684621	0 6 96 108 116 126 132 140 228 236 242 252 260 272 362 368	333203653108
STPT(10)	1990464149610606557	0 2 24 26 42 44 60 62 84 86	468654575044
SPT(16)	1990464589105587593	0 6 14 36 50 140 150 216 308 374 384 474 488 510 518 524	908149556080