I asked about this on mersenneforum.org. They gave me a non-paywalled link. It looks like it finds likely primes in ranges where the numbers are "not too large". 10^6 is not too large. PrimeGrid is working on numbers around 10^1000000. That's probably too large.
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.