19990...06661 (997-digits)

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

Single Curio View: (Seek other curios for this number)

The largest known strobogrammatic emirp, as of 4 January 2022. [Sariyar]

Submitted: 2022-01-02 01:24:59; Last Modified: 2022-01-04 21:45:20.

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