Python prime number

Determine if number is prime python

# Time Efficient Primality Check in Python

def primeCheck(n):
    # 0, 1, even numbers greater than 2 are NOT PRIME
    if n==1 or n==0 or (n % 2 == 0 and n > 2):
        return "Not prime"
    else:
        # Not prime if divisable by another number less
        # or equal to the square root of itself.
        # n**(1/2) returns square root of n
        for i in range(3, int(n**(1/2))+1, 2):
            if n%i == 0:
                return "Not prime"
        return "Prime"

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))]

Primes in python

from math import sqrt
for i in range(2, int(sqrt(num)) + 1):
    if num % i == 0:
        print("Not Prime")
        break
    print("Prime")

# Note: Use this if your num is big (ex. 10000 or bigger) for efficiency
# The result is still the same if the num is smaller

Is prime python

import math
def isPrimeNumber(n):
    if (n < 2):
        return False;
    sq = int(math.sqrt(n))
    for i in range(2, sq + 1):
        if (n % i == 0):
            return False
    return True

Prime number in python

a=int(input('print number:'))
for i in range(2,a):
    if a%i !=0:
        continue
    else:
        print("Its not a prime number")
        break # here break is exicuted then it means else would not be exicuted.
else:
    print("Its a prime number")

Python prime number

Credit to: https://www.programiz.com/python-programming/examples/prime-number
# get all prime numbers smaller than 1000
for num in range(0,1000):
  if num > 1:
     # check for factors
     for i in range(2,num):
         if (num % i) == 0:
             print(num,"is not a prime number")
             print(i,"times",num//i,"is",num)
             break
     else:
         print(num,"is a prime number")

  # if input number is less than
  # or equal to 1, it is not prime
  else:
     print(num,"is not a prime number")

Similar codes

-1 vote146 views1 answer
Django filter on related field
Python Django
34 votes102 views6 answers
How to open a file in python
Python
18 votes123 views9 answers
While loop
Python
0 vote124 views1 answer
Open anarchy ip
Python
2 votes110 views2 answers
Python list to string without brackets
Python
0 vote119 views1 answer
Import messages
Python
3 votes174 views1 answer
Django session expire time
Python Django
0 vote118 views1 answer
How to specify port while running django project
Python
0 vote83 views1 answer
Find out how many rows are missing in the column 'your_column'
Python
1 vote122 views6 answers
Skit learn decision
Python