prime numbers in 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 number in python
def prime(num):
if num>1:
s=int(num/2)
for i in range(2,s+1):
if num%i==0:
return("not prime")
break
return("prime")
print(prime(239))
Example 3: 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 4: python calculate prime numbers until numer
until = 20
[n for n in range(2, until) if all(n % m != 0 for m in range(2, n-1))]
Example 5: list of prime numbers in python
n = 20
primes = []
for i in range(2, n + 1):
for j in range(2, int(i ** 0.5) + 1):
if i%j == 0:
break
else:
primes.append(i)
print(primes)
Example 6: 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 ()