Prime p₀= 2253442065398940257 starts a Symmetric tuple of 18 consecutive primes (SPT).
d_n: 0 20 4 32 76 18 26 24 6 4 6 24 26 18 76 32 4 20 (?)
a_n: 0 20 24 56 132 150 176 200 206 210 216 240 266 284 360 392 396 416
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: 416
Found by: [SG-2W]Kurzer
db: batch=81, k=18, 20 4 32 76 18 26 24 6 4

SPT(16)	2253440364691024129	0 18 34 78 90 102 112 148 174 210 220 232 244 288 304 322	-1700707916128
SPT(16)	2253440391163350509	0 2 60 74 128 138 158 168 194 204 224 234 288 302 360 362	-1674235589748
STPT(10)	2253440466388000859	0 2 12 14 30 32 48 50 60 62	-1599010939398
STPT(10)	2253441217153055099	0 2 42 44 60 62 78 80 120 122	-848245885158
STPT(10)	2253441429353713757	0 2 30 32 72 74 114 116 144 146	-636045226500
SPT(16)	2253441461820594127	0 4 66 84 90 136 166 202 264 300 330 376 382 400 462 466	-603578346130
STPT(10)	2253442184858174411	0 2 6 8 48 50 90 92 96 98	119459234154
SPT(16)	2253443354429654063	0 14 26 98 146 176 204 260 264 320 348 378 426 498 510 524	1289030713806
SPT(16)	2253443355770089547	0 12 32 72 74 84 86 116 120 150 152 162 164 204 224 236	1290371149290
STPT(10)	2253443469954807341	0 2 30 32 78 80 126 128 156 158	1404555867084
SPT(16)	2253443476646008369	0 34 94 118 162 198 202 238 324 360 364 400 444 468 528 562	1411247068112