444444
This number is a composite.
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The smaller of two 6-digit repdigit numbers such that the product of itself and all truncations of itself plus one is prime, i.e., 444444*44444*4444*444*44*4+1=6859617106413367297. The other is 666666. [Loungrides]
Submitted: 2016-02-24 14:31:23; Last Modified: 2018-05-26 12:49:58.
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