Prime p₀= 248474464860231121 starts a Symmetric tuple of 20 consecutive primes (SPT).
d_n: 0 10 8 4 18 30 26 12 54 10 74 10 54 12 26 30 18 4 8 10 (?)
a_n: 0 10 18 22 40 70 96 108 162 172 246 256 310 322 348 378 396 400 408 418
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: 418
derived by truncating larger tuple
Found by: LeChat51X
db: batch=69, k=20, 10 8 4 18 30 26 12 54 10 74

TPT(12)	248474366529743819	0 2 48 50 90 92 132 134 150 152 192 194	-98330487302
SPT(14)	248474403546300563	0 24 38 60 66 78 80 84 86 98 104 126 140 164	-61313930558
SPT(14)	248474423664015799	0 12 48 90 174 178 180 202 204 208 292 334 370 382	-41196215322
SPT(14)	248474432438330873	0 24 36 38 98 134 158 186 210 246 306 308 320 344	-32421900248
SPT(14)	248474459497194611	0 2 18 90 98 120 140 150 170 192 200 272 288 290	-5363036510
SPT(22)	248474464860231119	0 2 12 20 24 42 72 98 110 164 174 248 258 312 324 350 380 398 402 410 420 422	-2
TPT(12)	248474498517230387	0 2 84 86 120 122 132 134 150 152 180 182	33656999266
SPT(14)	248474506155855527	0 6 20 42 66 122 132 260 270 326 350 372 386 392	41295624406
TPT(12)	248474509407877931	0 2 36 38 96 98 120 122 168 170 276 278	44547646810
SPT(14)	248474516670297769	0 4 112 118 154 172 234 298 360 378 414 420 528 532	51810066648
SPT(14)	248474525426723551	0 40 88 148 160 208 250 336 378 426 438 498 546 586	60566492430
SPT(14)	248474532321886511	0 26 120 170 212 216 236 246 266 270 312 362 456 482	67461655390