7517

This number is a prime.

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7517 is the smallest multi-digit prime that's a palindrome in both base 4 and base 6. It is 1311131 in base 4 and 54445 in base 6. The next largest prime of this type is 69313. [Keith]

Submitted: 2023-11-16 21:59:25;   Last Modified: 2023-11-17 01:56:01.
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