{"id":186264,"date":"2025-01-24T16:40:46","date_gmt":"2025-01-24T16:40:46","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=186264"},"modified":"2025-01-24T16:40:49","modified_gmt":"2025-01-24T16:40:49","slug":"write-a-function-called-isprime-that-receives-a-number-as-a-parameter-and-checks-if-the-number-is-prime-or-not","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2025\/01\/24\/write-a-function-called-isprime-that-receives-a-number-as-a-parameter-and-checks-if-the-number-is-prime-or-not\/","title":{"rendered":"Write a function (called isPrime) that receives a number as a parameter and checks if the number is prime or not"},"content":{"rendered":"\n

Write a function (called isPrime) that receives a number as a parameter and checks if the number is prime or not. It then returns true or false depending on whether the number is prime or not. Create a main function. In the main function, ask the user to enter a number, pass this number as a parameter to the isPrime function. Then display the outcome.<\/p>\n\n\n\n

The Correct Answer and Explanation is :<\/strong><\/mark><\/p>\n\n\n\n

To determine whether a number is prime, we can implement a function named isPrime<\/code> in Python. A prime number is a natural number greater than 1 that has no positive divisors other than 1 and itself. Here’s how we can achieve this:<\/p>\n\n\n\n

import math\n\ndef isPrime(number):\n    \"\"\"Check if a number is prime.\"\"\"\n    if number <= 1:\n        return False\n    if number == 2:\n        return True  # 2 is the only even prime number\n    if number % 2 == 0:\n        return False  # Exclude all other even numbers\n    for i in range(3, int(math.sqrt(number)) + 1, 2):\n        if number % i == 0:\n            return False\n    return True\n\ndef main():\n    \"\"\"Main function to test the isPrime function.\"\"\"\n    try:\n        number = int(input(\"Enter a number: \"))\n        if isPrime(number):\n            print(f\"{number} is a prime number.\")\n        else:\n            print(f\"{number} is not a prime number.\")\n    except ValueError:\n        print(\"Please enter a valid integer.\")\n\nif __name__ == \"__main__\":\n    main()<\/code><\/pre>\n\n\n\n
Explanation:<\/strong><\/p>\n\n\n\n
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  1. Importing the math<\/code> Module:<\/strong><\/li>\n<\/ol>\n\n\n\n