332169193

This number is a prime.

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An emirp such that continually deleting the outermost digits gives a brilliant number at each step, 3216919 = 1511 × 2129, 21691 = 109 × 199, 169 = 13^2, 6 = 2 × 3. [Loungrides]

Submitted: 2017-05-21 09:09:14; Last Modified: 2017-07-19 23:09:50.