Prime p₀= 1898311712258462681 starts a Symmetric tuple of 18 consecutive primes (SPT).
d_n: 0 6 20 6 24 36 4 2 18 46 18 2 4 36 24 6 20 6 (?)
a_n: 0 6 26 32 56 92 96 98 116 162 180 182 186 222 246 252 272 278
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: 278
Found by: [AF>EDLS]_Damien
db: batch=79, k=18, 6 20 6 24 36 4 2 18 46

SPT(16)	1898310818092913629	0 34 48 52 60 88 94 124 138 168 174 202 210 214 228 262	-894165549052
SPT(16)	1898311059372536923	0 60 66 108 154 184 196 210 214 228 240 270 316 358 364 424	-652885925758
SPT(16)	1898311234133979869	0 18 42 72 84 138 144 168 224 248 254 308 320 350 374 392	-478124482812
SPT(16)	1898311561404651389	0 20 122 174 194 218 330 338 384 392 504 528 548 600 702 722	-150853811292
SPT(16)	1898311570611881749	0 4 22 24 42 52 112 120 142 150 210 220 238 240 258 262	-141646580932
STPT(10)	1898311615339342961	0 2 6 8 18 20 30 32 36 38	-96919119720
STPT(10)	1898312016023830679	0 2 18 20 30 32 42 44 60 62	303765367998
SPT(16)	1898312079740950219	0 48 52 100 120 142 150 162 238 250 258 280 300 348 352 400	367482487538
SPT(16)	1898312433399342557	0 6 20 24 44 62 120 204 212 296 354 372 392 396 410 416	721140879876
SPT(16)	1898313126895599503	0 24 60 68 78 96 126 168 176 218 248 266 276 284 320 344	1414637136822
SPT(16)	1898313532960103711	0 2 20 56 86 126 128 132 266 270 272 312 342 378 396 398	1820701641030