189101681

This number is a composite.

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The smallest strobogrammatic 3-sphenic number, that consists of all the invertible digits, 0, 1, 6, 8, 9, i.e., 189101681 = 431 * 541 * 811. [Loungrides]

Submitted: 2014-04-26 19:02:34; Last Modified: 2018-08-18 12:52:58.