Prime Factors 4+

Paul Hangas

Designed for iPad

    • 4.8 • 16 Ratings
    • Free



Scroll through the numbers from 1 to 1,000,000,000,000. See which numbers are Prime and view the Prime Factors of the Composite numbers. Jump directly to a number to see if your phone number or social security number is Prime.

• Prime Numbers are marked with a red circle
• Prime Factors can be viewed by tapping on a number
• Pinch and Zoom to change the number of columns

What’s New

Version 2.5

Updates for iOS 14. Now able to view numbers from 1 to 1,000,000,000,000.

Ratings and Reviews

4.8 out of 5
16 Ratings

16 Ratings

Tem Noon ,

Great app! I use it every day!

When I write in my journal, I check every day how many days old I am, and put the prime factors in my journal. This app is perfect for that.

Rambo8649 ,

I would rather pay to see no ads

The app works, but the ads are very, very annoying. It’s a combination of outside ads and ads for the developers own apps. I would rather pay for the app than see the ads. If I didn’t have to see the ads, I would rate this app four or five stars. I am deleting this app, I can’t handle the ads.

Cab Coose ,


This app is really good! I love how far up it can go. It can go up to over 100 Billion!

App Privacy

The developer, Paul Hangas, has not provided details about its privacy practices and handling of data to Apple. For more information, see the developer’s privacy policy.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.

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