2531
This number is a prime.
Single Curio View: (Seek other curios for this number)
This prime permutes the first 4 noncomposite digits, and
inserting operators becomes 2^53 - 1 = 9007199254740991;
the largest prime that is currently supported by this
site's JavaScript program. [Post]
Submitted: 2008-07-11 16:26:10; Last Modified: 2008-07-17 17:33:24.
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