I' ve got 0, 001 second result.
This is an easy problem - impossible to solve without cheating but here yuo can find this useful list: http://primes.utm.edu/mersenne/index.html#known
;)

All necessary numbers are given in task (for all n>8), so the only task is to find first 7 numbers!!!
So, this problem can be solved without cheating :)

PS. Thanks for Link!

Edited by author 08.07.2006 19:52

it depends on what you understand as cheating;)
But it is no other way to solve this task other then using control c control v;)))