# Python Prime Number Sieves

sanghan

17.1K views

### Open Source Your Knowledge, Become a Contributor

Technology knowledge has to be shared and made accessible for free. Join the movement.

## Prime Sieves and Python Data Structures

One of those recurring problems requires efficiently calculating and testing for prime numbers.
The first algorithm that comes to mind is `The Sieve of Eratosthenes`

.

The Sieve, is one of many prime sieves, and is a simple yet time efficient algorithm for finding all the primes below a certain limit.

A prime number is a natural number that has exactly two distinct natural number divisors: 1 and itself. Make note that we do not consider 1 a prime number albeit also not being composite.

Is 2 a prime number

Suggested playgrounds

Open Source Your Knowledge: become a Contributor and help others learn. Create New Content