Basic Calculations - 100/month. Required link back.
Customize Calculations - unlimited. Customizable. No link.
Prime Number Formula:
log¹¹0x is a number n such that 10ⁿ = x
Prime Number Definition
Our free online Prime Number Calculator makes it super easy to check any number to see if it is a prime number. Learning how to calculate if a number is prime is as easy as pie with our prime number formula and prime number finder. Just enter any number to check and see if the number is prime right now! Also, be sure and check out all of our other math calculators!
How to Calculate Prime Number
Let's be honest - sometimes the best prime number calculator is the one that is easy to use and doesn't require us to even know what the prime number formula is in the first place! But if you want to know the exact formula for calculating prime number then please check out the "Formula" box above.
Add a Free Prime Number Calculator Widget to Your Site!
You can get a free online prime number calculator for your website and you don't even have to download the prime number calculator - you can just copy and paste! The prime number calculator exactly as you see it above is 100% free for you to use. If you want to customize the colors, size, and more to better fit your site, then pricing starts at just $29.99 for a one time purchase. Click the "Customize" button above to learn more!