How to find integer nth roots?

Question

I want to find the greatest integer less than or equal to the kth root of n. I tried

int(n**(1/k))

But for n=125, k=3 this gives the wrong

Answer 1

def nthrootofm(a,n):
    a= pow(a,(1/n))
    return 'rounded:{},'.format(round(a))
a=125
n=3
q=nthrootofm(a,n)
print(q)

just used a format string , maybe this helps.