6859
This number is a composite.
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The smallest of seven cubes of double-digit primes, (6859=19^3), whose sum of digits is a perfect number. The other primes are 31, 43, 61, 73, 79, 97. [Loungrides]
Submitted: 2014-11-08 18:58:23; Last Modified: 2020-02-08 13:19:43.
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