74141201

This number is a prime.

+ Replacing each digit of prime 74141201 with the digit's cube, a new prime is obtained up to six primes doing this recursively: 74141201-> 343641641801-> 27642721664121664151201-> 834321664834381216216641812162166411251801-> 5122764278121621664512276427512181216812162166415121812168121621664118125151201-> 1251883432166483435121812168121621664125188343216648343125181512181216512181216812162166411251815121812165121812168121621664115121812511251801. [Bajpai]

Printed from the PrimePages <primes.utm.edu> © G. L. Honaker and Chris K. Caldwell