Answers for "prime function in python"

7

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"
Posted by: Guest on September-17-2020
3

prime number in python

import math
a=[i for i in range(2,int(input('prime number range'))) if 0 not in [i%n for n in range(2,int(math.sqrt(i)))]]
print(a)
Posted by: Guest on June-18-2021
0

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
Posted by: Guest on August-13-2021
0

prime number using python

# Prime number checker

def is_prime(num):
    for i in range(2,num):
        if (num % i) == 0:
            return False
    return True
    
num = int(input("Enter a number:"))
check_prime = is_prime(num)

if check_prime:
    print("Your number is a prime")
else:
    print("Your number is not a prime ")
Posted by: Guest on November-13-2021
2

prime checker in python

#make the function
#to do this all hte vairibles go in side the function

def CheckIfPrime ():
    a1 = input("which number do you want to check")
    a = int(a1)#you need the checking number as an int not an str
    b = 2 #the number to check againts
    c = ("yes")
    while b < a:#run the loop
        if a%b == 0:#check if the division has a remainder
            c = ("no")#set the answer
        b = b+1
    print(c)#print the output
CheckIfPrime ()#call the function
Posted by: Guest on August-30-2020
0

prime number in python

start_num , end_num = input("enter 2 number sepreted by ,:").split(",")
start_num , end_num = int(start_num) , int(end_num)

for number in range(start_num , end_num+1):
    is_prime = True
    for counter in range(2,number):
        value = number % counter
        if value == 0:
            is_prime = False
            break
    if is_prime == True:
        print(number)
Posted by: Guest on November-05-2021

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