20772199
This number is a composite.
Just showing those entries submitted by 'Rivera': (Click here to show all)
The number 20772199 is the smallest integer with the property that the sum of the prime factors of n and the sum of the prime factors of n+1 are both equal to 666: [Rivera]
Printed from the PrimePages <primes.utm.edu> © G. L. Honaker and Chris K. Caldwell