Quantcast Testing Abundant Number Formula? Text - Physics Forums Library

PDA

View Full Version : Testing Abundant Number Formula?


RocketSurgery
Jul13-08, 12:46 AM
If I had a formula which I think generates Abundant numbers how can I make a Mathematica program to find a counter example?

So I have this code,

abQ[n_] := DivisorSigma[1, n] > 2 n; Select[Range[1000], abQ[#] &]

and I want to check my formula against the numbers generated by this to any given length just to see if I can find a counter example before I devote any more time to trying to prove the formula.