2006-03-19, 21:53 | #1 |
Mar 2006
3·173 Posts |
Question on unfactored numbers...
Hello everyone,
I was wondering, how do I tell if a number being tested is left unfactored once gmp-ecm is done with it? I've already modified the source to add an "output unfactored numbers" option but so far the if statement looks like: if ((cnt == 0) && (output_unfactored_n == 1)) This way it will only run once, at the end of testing that particular number, but right now it is outputting unfactoreds alongside the factoreds. Is there a quick test I can put in my if statement to see if the number is unfactored? Thank you for any help you can give. -David C. |
2006-03-19, 22:16 | #2 |
Jul 2004
Potsdam, Germany
3×277 Posts |
If no factor has been found, there won't be any factors shown afterwards, that's all you need.
If gmp-ecm finds a factor, it says so... |
Thread Tools | |
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
COMPLETE!!!! Thinking out loud about getting under 20M unfactored exponents | petrw1 | Data | 1409 | 2022-07-28 08:01 |
ECM question for mersenne numbers | LaurV | Math | 11 | 2012-03-16 12:10 |
Question about Mersenne Numbers | rong123 | Marin's Mersenne-aries | 7 | 2007-11-09 00:34 |
newbie question - finding small factors of very large numbers | NeoGen | Math | 7 | 2007-03-13 00:04 |
newbie question - testing primality of very large numbers | NeoGen | Software | 8 | 2006-03-20 01:22 |