31837
This number is a composite.
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The only sphenic number (product of double-digit emirps, i.e., 13*31*79) whose reversal is a brilliant number, i.e., 73813 = 223*331. [Loungrides]
Submitted: 2019-06-27 05:17:14; Last Modified: 2020-08-07 21:11:26.
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