19999...96771 (1000-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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2*10^999-3229 and 3229 are the greatest apart and symmetric primes from its center 10^999. Thus, the average of both primes is 10^999. [Rivera]

Submitted: 2020-06-25 15:04:09; Last Modified: 2020-06-25 15:35:58.