python3 test if number is prime code example
Example 1: determine if number is prime python
def primeCheck(n):
if n==1 or n==0 or (n % 2 == 0 and n > 2):
return "Not prime"
else:
for i in range(3, int(n**(1/2))+1, 2):
if n%i == 0:
return "Not prime"
return "Prime"
Example 2: 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.')