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Prime Number:A prime number is a natural number greater than 1 that has no positive divisors other  than 1 and itself. Example 2,3,5,7,11,13,17

 Program-1

# Python code to check a given number is prime or not
num = 15
if num > 1:
   for i in range(2, num//2):
       if (num % i) == 0:
           print(num, "is not a prime number")
           break
   else:
       print(num, "is a prime number")
  
else:
   print(num, "is not a prime number") 
 
Program-2
 
# Python code to print all the prime numbers within an interval 
low = 6 
high = 51 
print("Prime numbers between", low, "&", high, "are:") 
    for num in range(low, high + 1):
   if num > 1:
       for i in range(2, num):
           if (num % i) == 0:
               break
       else:
            print(num)
 

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