On 05/16/2012 07:14 AM, Tiberiu Gal wrote: > "You'll skip 70% of checks..." > that's true for the Circular check ... but in the whole app, the most > time is spent finding primes. A number that cannot be circular prime need not be checked whether regular prime. Ali -- D Programming Language Tutorial: http://ddili.org/ders/d.en/index.html