Is_prime = lambda number: all( number%i != 0 for i in range(2, int(number**.5)+1) )Įxplanation: This program determines the range of prime numbers using the lambda function technique lambda represents an anonymous function or an orphan function. Number = int(input("Enter the input Range : ")) Prime numbers can be implemented in python by several techniques four among them are explained below: 1. Web development, programming languages, Software testing & others Techniques to Implement Prime Number in Python The following animation, adapted from Wikipedia, clearly illustrates this algorithm.Start Your Free Software Development Course Then the algorithm continues with the next prime number. Put simply, this algorithm starts from the very first prime number, 2, and marks every multiple of it smaller than x as composite. One of the most efficient algorithms for calculating prime numbers is called Sieve of Eratosthenes. For instance, if x=100,000,000, then the program must check each and every number between 2 and 99,999,999 to see if it divides x evenly or not.īetter methods can nevertheless be used to calculate prime numbers. Although such a method can be used for very small numbers, but it will be very time consuming and also subject to errors for large numbers. If no such number divides x evenly, then it can be concluded that x is a prime number. Therefore, numbers like 2, 3, 5, 7, 11 are all prime numbers.Īs a result of the definition of a prime number, one might probably decide to check if a given number, x, is prime by trying to divide it by all the integers starting from 2 and smaller than x.
A prime number is a positive number greater than 1, which has no positive integer divisors except 1 and itself.
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