31415...51413 (921-digits)

This number is a probable-prime (likely to be a prime but we have not (re-)proven it on this site).

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The largest known palindromic prime formed from the reflected decimal expansion of π (as of 2008). [Spahni]

Submitted: 2023-09-15 02:52:13; Last Modified: 2023-09-15 02:58:07.