# 42000...00043 (44-digits)

This number is a prime.

4200 0000000000 0000000000 0000000000 0000000043

A prime number that begins with 42, ends with 43, and has a length of 44 digits. This is also the only known prime of the form *n* * 10^{n} + *n* + 1. [Earls]

Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell