As a comparison, DNETC is trying to crack 72bit RSA. Going from that to 1024 bits....ehhh...here's DNETC's current progress:
Total Blocks to Search: 1,099,511,627,776
Total Blocks Tested: 15,225,010,302
Overall Rate: 59 Blocks/sec
Total Keys to Search: 4,722,366,482,869,645,213,696
Total Keys Tested: 65,390,921,328,353,083,392
Overall Rate: 254,399,787,303 Keys/sec
Percent Complete: 1.385%
Time Working: 2,975 days
And DNETCs expected finishing time:
The odds are 1 in 32,055 that we will wrap this thing
up in the next 24 hours. (This also means that we'll
hit 100% in 32,055 days at yesterday's rate.)
So jumping from just 72bits to 1024? Yeah this project will be around awhile.