# How many ways we can represent 50! as the sum of two primes?

1. Jun 6, 2008

in how many ways we can represent 50! as the sum of two primes?

2. Jun 8, 2008

### huba

Are you looking for a number, an approximation, a formula, or an algorithm?
A062311, in the Encyclopedia of Integer Sequences, lists the first 13 "number of ways writing n! as a sum of two primes", that is it goes as far as 13!, it does not have a formula for a "reasonable" calculation by hand, and the last 5 terms were added as recently as 2008! (my last ! is an exclamation mark)

Last edited: Jun 8, 2008