A217875 Primes which have the same (base 10) digital sum A007953 as the next smaller and next larger prime.

22229, 25391, 69557, 107563, 111409, 167953, 200843, 202309, 208609, 217271, 221891, 236609, 238591, 250091, 250343, 274609, 290557, 355591, 373091, 382391, 404291, 407119, 415409, 417419, 439063, 441229, 447943, 515191, 542873, 581891, 582119, 591691, 614963

Offset: 1

Author

M. F. Hasler, Oct 13 2012

Keywords

• nonn
• base

Links

• M. F. Hasler, Table of n, a(n) for n = 1..733 (all terms below 10^7).
• C. Caldwell (Ed.), 22229 (another Prime Pages' Curiosity).

Crossrefs

A subsequence of A066540.

Programs

PARI

{q=r=0; forprime(p=1,default(primelimit),(p-q)%18==0 & (q-r)%18==0 & A007953(p)==A007953(q) & A007953(p)==A007953(r) & print1(q","); r=q; q=p)}