Prime p₀= 1339473906826365521 starts a Symmetric tuple of 20 consecutive primes (SPT).
d_n: 0 8 4 56 42 88 8 4 12 6 32 6 12 4 8 88 42 56 4 8 (?)
a_n: 0 8 12 68 110 198 206 210 222 228 260 266 278 282 290 378 420 476 480 488
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: 488
derived by truncating larger tuple
Found by: mikey
db: batch=77, k=20, 8 4 56 42 88 8 4 12 6 32

SPT(16)	1339473074988279551	0 26 78 80 90 110 150 158 168 176 216 236 246 248 300 326	-831838085970
STPT(10)	1339473499173089051	0 2 36 38 78 80 120 122 156 158	-407653276470
SPT(16)	1339473535051395827	0 2 12 44 72 84 102 110 114 122 140 152 180 212 222 224	-371774969694
STPT(10)	1339473598973173931	0 2 36 38 78 80 120 122 156 158	-307853191590
STPT(10)	1339473779318084477	0 2 12 14 42 44 72 74 84 86	-127508281044
SPT(22)	1339473906826365491	0 30 38 42 98 140 228 236 240 252 258 290 296 308 312 320 408 450 506 510 518 548	-30
SPT(16)	1339474216065584321	0 2 8 50 56 62 108 116 132 140 186 192 198 240 246 248	309239218800
SPT(16)	1339474471249934711	0 6 30 60 80 98 102 168 170 236 240 258 278 308 332 338	564423569190
STPT(10)	1339474760465021429	0 2 18 20 30 32 42 44 60 62	853638655908
TPT(14)	1339474840396407269	0 2 18 20 78 80 162 164 282 284 438 440 450 452	933570041748
STPT(10)	1339474932573747791	0 2 6 8 48 50 90 92 96 98	1025747382270
SPT(16)	1339474943592706339	0 28 58 60 70 102 130 172 198 240 268 300 310 312 342 370	1036766340818