get greatest prime factor in F#

Posted by Alex on Stack Overflow See other posts from Stack Overflow or by Alex
Published on 2012-07-01T15:12:29Z Indexed on 2012/07/01 15:15 UTC
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I had VS 11 beta and the following code was working without problem:

let rec fac x y =
if (x = y) then y
elif (x % y = 0I) then fac (x / y) y
else fac x / (y + 1I);;

Now I installed VS 2012 RC and I get the following error:

The type 'System.Numerics.BigInteger -> System.Numerics.BigInteger' is not compatible with the type 'System.Numerics.BigInteger'

Is code not correct or F# interactive? It's F# 3.0.

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