J2ME newbie

Hey. So I was studing for the SAT and I thought it would be really nifty to have a calculator handy that could give me the prime factors of any given number.... This would be an easy program and if I wrote it in J2ME I could install it on my cell phone. But I've never written anything in J2ME, infact I'm kind of a newbie to java in general but I have programmed in other languages quite a bit and something as simple as this should be a good starter project.

I have been having a hard time finding any good J2ME tutorials out there. There's a lot of weird things that are frustrating me such as data types I can and cannot use in J2ME vs real java. So far only INT seems to work but to check if a number was evenly divisible I need to compare it's INT value with the full decimal value... for example what I want to do is this:

private int a; private decimal b; private int c; private int n=2; a=5; // normally 'a' would be something we got from the user while (n<a) { b=a/n; // 5/2=2.5 c=a/n; // 5/2=2 if (b=c) { display (b); a=b; n=2; } else { n++ } }

unfortunatly I've tried double, long, decimal, float, but only INT seems to be a valid numerical data type

if anyone out there knows of any good J2ME tutorials let me know.