check number is prime or not python code example
Example 1: how to check if a number is prime in python
def prime(num):
for x in range(2,num):
if num % x == 0:
return False
return True
Example 2: prime checker in python
def CheckIfPrime ():
a1 = input("which number do you want to check")
a = int(a1)
b = 2
c = ("yes")
while b < a:
if a%b == 0:
c = ("no")
b = b+1
print(c)
CheckIfPrime ()
Example 3: check if a number is prime python
n=input('Enter the number you want to check: ')
try:
n=int(n)
except:
print('Wrong input.')
quit()
if n==1 or n==0:
print('This is neither prime nor composite')
else:
c=0
for i in range(2,n):
if n%i==0:
c=c+1
if c==0:
print("This is a prime number")
else:
print('This is a composite number.')