3089

This number is a prime.

The start of the first occurrence of three consecutive primes ending with the digit nine (3089, 3109, 3119). [Murthy]

Machin's formula was used by S. C. Nicholson and J. Jeenel in 1954 to find π to 3089 decimal places on the IBM Naval Ordnance Research Calculator (NORC). [Honaker]