Anything over 3G digits may exceed a lifetime.
1: nice asm challenge to get it faster, bignum 64bit chunks instead of 8bit bcd?
2: suitable for SIMD?, anyway good SIMT exercise, run thread in background computer lifetime or how much time you want to spend on run it, 3.8GB ram in 32 bit might be enough memory for 1g digits
I have newest multicore to try SIMT, but I also can run it on my older computers,while use new
