4007

This number is a prime.

Just showing those entries submitted by 'Gaydos': (Click here to show all)

+ The smallest five-digit Cyclops number (11011) is the sum of 4007 and its reverse (7004). [Gaydos]

+ The sum of the first 4007 distinct-digit numbers is the largest triangular number you can achieve in this manner. [Gaydos]

Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell