Prime p₀= 1938409697177417407 starts a Symmetric tuple of 18 consecutive primes (SPT).
d_n: 0 10 32 18 16 26 94 38 6 166 6 38 94 26 16 18 32 10 (?)
a_n: 0 10 42 60 76 102 196 234 240 406 412 450 544 570 586 604 636 646
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: 646
Found by: kashi
db: batch=80, k=18, 10 32 18 16 26 94 38 6 166

SPT(16)	1938409179030502379	0 54 60 104 108 168 182 194 258 270 284 344 348 392 398 452	-518146915028
STPT(10)	1938409320360786017	0 2 192 194 222 224 252 254 444 446	-376816631390
SPT(16)	1938409423563301187	0 50 80 90 120 176 230 234 272 276 330 386 416 426 456 506	-273614116220
SPT(16)	1938409465984591123	0 6 18 40 58 60 90 96 118 124 154 156 174 196 208 214	-231192826284
TPT(14)	1938409572623684579	0 2 12 14 18 20 180 182 198 200 240 242 312 314	-124553732828
SPT(16)	1938409598763242711	0 12 68 78 96 120 162 176 252 266 308 332 350 360 416 428	-98414174696
SPT(16)	1938409980043494593	0 74 138 150 164 194 198 206 228 236 240 270 284 296 360 434	282866077186
SPT(16)	1938410191062225479	0 30 44 104 132 134 140 174 218 252 258 260 288 348 362 392	493884808072
SPT(16)	1938410631773097841	0 6 10 30 88 100 118 160 168 210 228 240 298 318 322 328	934595680434
SPT(16)	1938410695423663757	0 24 30 50 66 90 114 140 156 182 206 230 246 266 272 296	998246246350
SPT(16)	1938410724703555321	0 10 16 18 22 36 42 70 108 136 142 156 160 162 168 178	1027526137914