Sieve of Eratosphenes

Name: Sieve of Eratosphenes
Rating: 2.5 (2 reviews)
Author: Michael McDaid

Use this bright colorful Sieve of Eratosthenes to find prime numbers while also learning about factors and multiples.

As of May 2026, Sieve of Eratosphenes has 494 users and a 2.50/5 rating from 2 reviews.

Michael McDaid

Chrome Web Store ↗.crx

Users−45.5%

494

Rating0%

2.50

2 reviews

Reviews0%

Version

1.0.2

Manifest V2

History

3 snapshots

Tracking since Apr 1, 2026.

View as table

Date	Users	Rating	Reviews	Version
Apr 1, 2026	907	2.50	2	1.0.2
Apr 30, 2026	906	2.50	2	1.0.2
May 29, 2026	955	2.50	2	1.0.2
Now	494	2.50	2	1.0.2

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About

Named after the Greek Mathematician Erastosthenes, the sieve provides a very efficient method for finding prime numbers.

As well as finding primes, the process helps students learn about multiples and factors. This interactive sieve is unique in that it show more than one color per square. This allows for the sieve to be used in variety of interesting ways.

For example the Sieve can be used to find the the LCM ( Lowest/Least common multiple ) of a set of numbers. 

A youtube video describes how to use this app, and also full help and instructions can be displayed by clicking the info icon.