19781
This number is a composite.
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The only brilliant number with 3-digit palindromic primes
as prime factors, whose the reversal is a 2-sphenic number,
(i.e., a number with three 2-digit prime factors): 19781 =
131 * 151, 18791 = 19 * 23 * 43. [Loungrides]
Submitted: 2015-10-19 07:24:38; Last Modified: 2019-04-13 14:06:08.
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