14141414141
This number is a prime.
1 4141414141
The smallest smoothly undulating palindromic prime of alternating ones and fours. [Gallardo]
Printed from the PrimePages <primes.utm.edu> © G. L. Honaker and Chris K. Caldwell
This number is a prime.
1 4141414141
The smallest smoothly undulating palindromic prime of alternating ones and fours. [Gallardo]