131

This number is a prime.

Just showing those entries submitted by 'Sariyar': (Click here to show all)

+ The smallest and possibly the only odd-digit palindromic prime that is partial sums of numbers (1+3+5+7+9...+31 = 131) whose divisors have only odd digits. Note that the primes with this property are 131, 199, 379, 519793, 113715733399, ... . [Sariyar]

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