This number is a composite.
The start of the earliest run of 9 numbers (either prime or Smith numbers) such that the sum of their digits is equal to the sum of the digits of their prime factors counted with multiplicity. A run of 10 such numbers will be greater than 5*10^12. By Giovanni Resta. [Rivera]
Printed from the PrimePages <t5k.org> © G. L. Honaker and Chris K. Caldwell