Python 2.6.4 (r264:75708, Oct 26 2009, 08:23:19) [MSC v.1500 32 bit (Intel)] on win32
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IDLE 2.6.4      
>>> from polymodp import PolyModP
>>> from polymodp import PModP
>>> from polymod import PolyMod, PMod # version with 3 param PolyMod __pow__
>>> from mod_arith import ZMod
>>> f = PolyMod('x^4 + 2x^2  +1', 3)
>>> q = 3**4
>>> q
81
>>> x = PolyMod('x', p)
>>> h = pow(x, q, f) - x # efficient new pow with polynomial modulus!
>>> h   
PolyMod('2x^3 + 2x', 3)
>>> f = PolyMod('x^4 + x^2  +2', 3) # better luck this time?
>>> h = pow(x, q, f) - x # efficient new pow with polynomial modulus!
PolyMod('0', 3)
>>> s = 3**(4/2) #On to other part of Rabin test; only 1 prime factor
>>> s
9
>>> from xgcd import xgcd, gcd
>>> h = pow(x, s, f) - x # efficient new pow with polynomial modulus!
>>> gcd(f, h)
PolyMod('2', 3)
>>> print f #success!  No more prime factors to test.  Irreducible:
x^4 + x^2 + 2
>>>