Squeak 4.5 error: #isPrime fails with relatively small Mersenne prime

This bit of code fails at numb := 1024:

error: Cannot truncate this number

numb := 1024.
1 to: numb do: [:n||test| test:=(2 raisedTo: n) -1. (test isPrime)
ifTrue: [Transcript show: n; tab; show: test;cr]]

#isProbablyPrime fails with the same number.


numb := 1023.
works for both.





L

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On Tue, Feb 10, 2015 at 02:39:19AM -0700, Lawson English wrote:
It looks like a problem in random number generation. It is failing in
LargePositiveInteger>>atRandom which somehow results in the random
generator producing a value of Float infinity.

Dave

On 10.02.2015, at 13:39, David T. Lewis <[hidden email]> wrote: Yep. Random>>nextInt: does not work for really large ints. Fixed in Kernel-bf.899.

- Bert -