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import math,sys
number = raw_input("input the number:")
number = int(number)
if(number<=1):
print 'number <=1'
sys.exit()
for i in range(2,int(math.sqrt(number)) + 1):
if(number%i==0):
print 'number %i is not prime number' %(number)
sys.exit()
print 'number %i is the prime number' %(number)