Prime p₀= 998026101215324759 starts a Symmetric tuple of 18 consecutive primes (SPT).
d_n: 0 18 72 12 92 36 30 12 12 4 12 12 30 36 92 12 72 18 (?)
a_n: 0 18 90 102 194 230 260 272 284 288 300 312 342 378 470 482 554 572
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: 572
Found by: HenkM
db: batch=76, k=18, 18 72 12 92 36 30 12 12 4

SPT(16)	998025523925985251	0 36 48 50 56 72 86 102 116 132 146 162 168 170 182 218	-577289339508
STPT(10)	998025607662944447	0 2 30 32 72 74 114 116 144 146	-493552380312
TPT(14)	998025634251526031	0 2 30 32 90 92 126 128 138 140 156 158 240 242	-466963798728
SPT(16)	998025716612129633	0 18 44 54 74 80 114 120 158 164 198 204 224 234 260 278	-384603195126
STPT(10)	998025775246316207	0 2 30 32 42 44 54 56 84 86	-325969008552
STPT(10)	998025781520672909	0 2 12 14 90 92 168 170 180 182	-319694651850
SPT(16)	998026171547272039	0 18 22 82 144 214 238 250 252 264 288 358 420 480 484 502	70331947280
SPT(16)	998026236248434667	0 14 36 50 72 86 96 110 126 140 150 164 186 200 222 236	135033109908
STPT(10)	998026344532753799	0 2 48 50 90 92 132 134 180 182	243317429040
STPT(12)	998026513326314387	0 2 12 14 54 56 60 62 102 104 114 116	412110989628
SPT(16)	998026997609540233	0 4 24 126 130 144 150 168 196 214 220 234 238 340 360 364	896394215474