702913

This number is a prime.

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The largest distinct-digit prime which remains prime on appending, prepending or inserting in any position the digit ‘7’ i.e. 7029137, 7702913, 7072913, 7027913, 7029713, 7029173 are all primes. [Gupta]

Submitted: 2020-07-19 07:26:01;   Last Modified: 2020-07-19 08:42:18.
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