3761

This number is a prime.

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The only prime of form n+R(n)+n*R(n), where n and its reversal R(n) are both composite double-digit numbers, (n=56). [Loungrides]

The smaller of only two primes concatenated in order from the prime factors of a prime-digit brilliant number, i.e., 2257 = 37 x 61. The other prime is 4759 formed from the prime factors of the prime-digit brilliant number 2773 = 47 × 59. [Loungrides]