prime number program in python

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Python Program to check given number is prime or not

n=int(input("enter the number"))
i=2
flag=0
while i<n/2:
 if n%i==0:
  flag=1
  break
 i=i+1
if flag==0:
 print("the number is prime")
else: 
 print("the number is not prime")

Input: 31 Output: number is prime

Python Program to check given number is armstrong no of any digit

n=int(input("enter the number"))
noofdigit,sum=0,0
n1=n
while n>0:
 noofdigit=noofdigit+1
 n=int(n/10)
n=n1
while n>0:
 rem=n%10
 k=1
 i=1
 while i<=noofdigit:
  k=k*rem
  i=i+1
 sum=sum+k
 n=int(n/10)
if sum==n1:
 print("number is armstrong")
else:
 print("number is not armstrong")

Input:153 Output :number is armstrong [armstrong no:153=1*1*1*+5*5*5+3*3*3]

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Python Program to check given number is prime or not

Python Program to check given number is armstrong no of any digit

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