'Returns ``True`` if GCD of the coefficients of ``f`` is one.
Examples
>>> from sympy import Poly
>>> from sympy.abc import x
>>> Poly(2*x**2 + 6*x + 12, x).is_primitive
False
>>> Poly(x**2 + 3*x + 6, x).is_primitive
True'

@property
def is_primitive(f):

    return f.rep.is_primitive
