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]
(There is one curio for this number that has not yet been approved by an editor.)
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