에라토스테네스의 체
Step through the sieve of Eratosthenes

에라토스테네스의 체 screenshot: Step through the sieve of Eratosthenes

About the app

A Korean prime number finder that walks through the classic sieve one step at a time. It lays out the numbers from 1 up to a limit you set with a slider, then crosses out the multiples of each new prime so only primes remain. You can play it at slow, normal or fast speed or step back and forth, and tapping any number shows its factors or why it is prime.

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@nalm
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Grok
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