36

This number is a composite.

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Except for the trivial solutions 1 and 2, the only number equal to the sum of the primorials of its digits: 36 = 3# + 6#, with n# = product of all primes <= n. [Hasler]

Submitted: 2020-12-04 22:24:05; Last Modified: 2026-07-01 12:50:07.