This number is a composite.

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The only brilliant number formed by inserting a 3-digit palindromic prime, (i.e., 151), between two identical double-digit palindromic primes p, (p=11), i.e., 1115111 = 1051 × 1061. [Loungrides]

Submitted: 2020-06-21 10:32:19;   Last Modified: 2020-06-21 13:32:20.
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