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check for prime in python

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Misty Manx answered on March 26, 2021 Popularity 10/10 Helpfulness 4/10

answer check for prime in python

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check for prime in python

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def is_prime(n: int) -> bool:
    """Primality test using 6k+-1 optimization."""
    import math
    if n <= 3:
        return n > 1
    if n % 2 == 0 or n % 3 == 0:
        return False
    i = 5
    while i <= math.sqrt(n):
        if n % i == 0 or n % (i + 2) == 0:
            return False
        i += 6
    return True

Popularity 10/10 Helpfulness 4/10 Language python

Source: en.wikipedia.org

Tags: python

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Contributed on Nov 20 2021

Misty Manx

0 Answers Avg Quality 2/10

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is prime python

Comment

def is_prime(n):
    for i in range(2,int(n**0.5)+1):
        if n%i==0:
            return False
    return True

Popularity 10/10 Helpfulness 10/10 Language python

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Tags: python py

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Contributed on May 04 2022

Mouad En-naciry

0 Answers Avg Quality 2/10

is prime python

Comment

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

Popularity 10/10 Helpfulness 8/10 Language python

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Tags: python py

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Contributed on Oct 29 2021

Sore Stork

0 Answers Avg Quality 2/10

python prime check

Comment

def isPrime(n):
  if n<2:		#1, 0 and all negative numbers are not prime
    return False
  elif n==2:	#2 is prime but cannot be calculated with the formula below becuase of the range function
    return True
  else:
    for i in range(2, n):
      if (n % i) == 0:	#if you can precisely divide a number by another number, it is not prime
        return False
    return True			#if the progam dont return False and arrives here, it means it has checked all the numebrs smaller than n and nono of them divides n. So n is prime

Popularity 10/10 Helpfulness 6/10 Language python

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Contributed on Mar 26 2021

RoD

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python check if number is prime

Comment

import sympy
print(sympy.isprime(433101397415390663))
# output = True

Popularity 9/10 Helpfulness 5/10 Language python

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Tags: python py

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Contributed on Jan 29 2023

Kodi4444

0 Answers Avg Quality 2/10

Python code for checking if a number is a prime number

Comments(1)

for i in range(2, 20):
    for x in range(2, i):
        if i % x == 0:
            break
    else:
        print(i, "is a prime number")

Popularity 9/10 Helpfulness 4/10 Language python

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Tags: python py

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Contributed on Jun 13 2022

OHIOLee

0 Answers Avg Quality 2/10

how to see if a number is prime in python

Comment

def is_prime(n: int) -> bool:
    """Primality test using 6k+-1 optimization."""
    if n <= 3:
        return n > 1
    if n % 2 == 0 or n % 3 == 0:
        return False
    i = 5
    while i ** 2 <= n:
        if n % i == 0 or n % (i + 2) == 0:
            return False
        i += 6
    return True

Popularity 10/10 Helpfulness 4/10 Language python

Source: en.wikipedia.org

Tags: python py

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Contributed on Jun 02 2021

Cloudy Caribou

0 Answers Avg Quality 2/10

how to find a prime number in python

Comment

#Good way to check if a number is prime or not
"""Number_Check is the number that you want to see if it is prime or not
For example 3 would return true because it is prime while 10 would return false 
because it isn't prime"""


def check_prime(Number_Check): 
    isprime = True
    for i in range(2, Number_Check - 1):
        if int(Number_Check / i) == Number_Check / i:
            isprime = False
    return isprime

Popularity 8/10 Helpfulness 4/10 Language python

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Contributed on Nov 28 2022

Adam Li

0 Answers Avg Quality 2/10

python is prime

Comment

from math import sqrt, floor;

def is_prime(num):
    if num < 2: return False;
    if num == 2: return True;
    if num % 2 == 0: return False;
    for i in range(3,floor(sqrt(num))+1,2):
        if num % i == 0: return False;
    return True;

Popularity 9/10 Helpfulness 3/10 Language python

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Contributed on Jun 13 2022

Grumpy Gemsbok

0 Answers Avg Quality 2/10

is prime python

Comments(1)

-1

def is_prime(n):
  return bool(n&1)

Popularity 8/10 Helpfulness 1/10 Language python

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Tags: python

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Contributed on May 04 2022

Mouad En-naciry

0 Answers Avg Quality 2/10

check for prime in python

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