13580...97531 (42-digits)

This number is a composite.

13 5802469135 8024691222 2086419753 0864197531

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The smallest sphenic number whose the prime factors are the repunit primes, i.e., R2, R19, R23. [Loungrides]

Submitted: 2019-01-23 18:40:39; Last Modified: 2019-04-13 18:30:15.