m=int(input())
n=int(input())
l=0
r=1 
while(r**m<=n):
    l=r;r*=2 
while(l+1<r): 
    mid=(l+r) // 2
    if (mid**m<=n):
        l=mid
    else:
        r=mid

if (l**m<=n):print(l)
else:print(r)