ONE FUNCTION · TWO PLACES TO RUN

Where do the primes happen?

Run the same JavaScript in your browser or on a Node.js server. Compare the results and the time it takes.

Find prime numbers from 1 up to

Choose a whole number from 1 to 1,000,000. A prime is greater than 1 and divisible only by 1 and itself.

YOUR DEVICE

Browser

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NODE.JS + EXPRESS

Run a calculation to see the results.