5479

This number is a prime.

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The average of the smallest (1009) and largest (9949) 4-digit primes featured in the book "Prime Curios!: The Dictionary of Prime Number Trivia" by Chris K. Caldwell and G. L. Honaker, Jr., 2009. [Green]

Submitted: 2010-02-07 01:08:42; Last Modified: 2010-02-07 20:47:18.