Message factorize: characteristic is too large(max is 2^29)

[gorzel]

Does factorize give a spurious message or is there indeed a restriction for the characteristic?

> ring rbigchar = 2147479751,x,dp;
> factorize(x2-1);
   ? characteristic is too large(max is 2^29)
[1]:
   _[1]=1
   _[2]=x2-7795
[2]:
   1,1

[hannes]

Yes, see "Limitations" (​http://www.singular.uni-kl.de/Manual/3-1-5/sing_431.htm), first point, second line: (the characteristic of a prime field in the factory routines must be less than 536870912 (2²⁹⁾⁾