1259

This number is a prime.

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1259 = 2^(2+3+5) + 235 is the only known prime of the form 2^(sum of first n primes) + concatenation of first n primes. [Sariyar]

Submitted: 2020-04-19 12:38:13;   Last Modified: 2020-06-23 10:33:29.
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