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'''

Created on Oct 15, 2019

@author: Big

'''

n=int(input("write a number >0:"))

ok=1

if(n==0 or n==1):

ok=0

else:

if(n%2==0):

if(n!=2):

ok=0

else:

d=2

while(d<=n//2):

if(n%d==0):

ok=0

break

if(d==2):

d=3

else:

d+=2

if(ok==1):

print("prime")

else:

print("!prime")