Yeah, I'm looking at those now, too. > Note that 4096-bit RSA key is not practically factorizable now, but may become so, if the attack is improved. I have to

Yeah, I'm looking at those now, too. > Note that 4096-bit RSA key is not practically factorizable now, but may become so, if the attack is improved. I have to assume that the attack will improve and -- even if they aren't factorizable now -- will become factorizable at some future time (i.e. "just in case").