10957
This number is a prime.
10957 is the smallest prime number which is sum of distinct primes beginning and ending with the digit nine: 10957 = 919 + 929 + 9109. [Capelle]
9480623175 is the largest distinct digit product of the nth
lucky number (127935) and the nth happy number (74105) with
n being 10957. [Gaydos]
(There is one curio for this number that has not yet been approved by an editor.)
Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell