863991439

This number is a prime.

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The number of seconds (86400) in a day and minutes (1440) in a day each exceeds a prime by 1, yet the concatenation of both primes (86399, 1439) is prime. [Beedassy]

Submitted: 2019-02-07 22:07:11; Last Modified: 2019-02-07 22:16:29.