prime!

I'm impressed by the speed. Also most factoring apps handle only small numbers up to 18 digits, but this one does large numbers as well. One thing I'm missing is time estimate when factorisation is in progress.

I tried dozens, and this app rules. Massive numbers 50+ digits long factored in seconds. I checked results against other apps which took much longer time, and the results are the same. Awesome job ☺

Was very fast

I loved it, it's excellent, it's outstanding, and many more things to say.

Nobody had never offered anything like that, so light and compact.

Only determines prime #s, not factorization. Useless.

This App is amazingly fast! So, I recommend this App highly. I'd give it 6 stars if I could. If the authors plan a new version in the future, I would like to see: 1) the ability to enter expressions, like 2^101 - 1, instead of having to enter all of the digits; this would make it easier to enter large numbers. 2) help text that describes how the app factors numbers, maybe a tutorial with links to Wikipedia articles.