From Unofficial BOINC Wiki
 More about PrimeGrid
PrimeGrid is currently under development, as is PerlBOINC. PrimeGrid is a PerlBOINC testing project, trying to deal with RSA Factoring Challenge - trying to split the 193-digit number into two factors that multiplied form the original number. The resources needed are very big, and we focus more on the PerlBOINC scheduler system than application optimisation, however, if we are very lucky, we will find the number - the application is fully working. See RSA Labs website for more technical information about RSA Factoring Challenge.