How do you check if a given number is prime in Python?
Ask by Utpal Vishwas
Updated 27 Jun 2023
This code works by first checking if the number is less than 2. If it is, the function returns False, because no number less than 2 is prime. Otherwise, the function iterates through all the numbers from 2 to the square root of the number, and checks if any of them are factors of the number. If any of them are factors, the function returns False. Otherwise, the function returns True.
Here is an explanation of the code:
is_prime()function takes a number as its input.if number < 2:statement checks if the number is less than 2. If it is, the function returns False.for i in range(2, int(number ** 0.5) + 1):statement iterates through all the numbers from 2 to the square root of the number.if number % i == 0:statement checks if any of the numbers in the range are factors of the number. If any of them are factors, the function returns False.return Truestatement returns True if the number is not divisible by any of the numbers in the range.