1069
This number is a prime.
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The smallest four-digit prime requiring seven steps to reach its fixed point under Kaprekar's process. [Honaker]
Submitted: 2016-08-13 02:28:23; Last Modified: 2016-08-13 23:01:39.
Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell