A102152 Iccanobirt primes (2 of 15): Prime numbers in A102112.

2, 7, 13, 167, 1843406868619, 567512739603223, 1125599723626314594798370059933052227890281327798090340341843

Offset: 1

Author

Jonathan Vos Post and Ray Chandler, Dec 31 2004

Keywords

• nonn
• base

Comments

Next term is too large to include.

The next term (a(8)) has 394 digits. The term after that (a(9)) has 1063 digits, and a(10) has 2599 digits. - Harvey P. Dale, Dec 26 2022

Crossrefs

Cf. A000040, A102112, A102151-A102165.

Programs

Mathematica

nxt[{a_,b_,c_}]:={b,c,a+FromDigits[Reverse[IntegerDigits[b]]]+c};Select[NestList[nxt,{0,0,1},200][[All,1]],PrimeQ] (* Harvey P. Dale, Dec 26 2022 *)

Formula

a(n) = A102112(A102132(n)).

Extensions

Offset changed to 1 by Jinyuan Wang, Aug 08 2021