258
This number is a composite.
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The concatenation of all of the permutations of the digits
of 258 in order (258285528582825852) falls between a pair
of prime twins. Is there any larger number for which this
is true? [Gaydos]
Submitted: 2017-08-22 02:14:49; Last Modified: 2018-08-06 18:28:18.
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