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Primality

Primality

Integer Primality or Factors

24 ratings
8 reviews
🔧 Utilities
🔍 Reference
Free

Details

  • Released
  • Updated
  • June 15, 2020
  • August 2, 2020

Features

Developer

Bruce Schechter
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Primality screenshot #1 for iPhone
Primality screenshot #2 for iPhone
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About

This app determines if a given integer is prime or provides its prime factors. It also calculates the ordinal position of prime numbers found, up to a certain limit.

✓Primality testing
✓Prime factorization
✓Prime ordinality calculation
✓Large integer support (up to 999,999,999,999)
✓Clean and simple interface
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What's New in Primality

1.00

August 2, 2020

Minor UI improvements

User reviews

Most RecentHighest RatedLowest Rated

Fulfills your prime number curiosity

This is a great app with a streamlined interface to answer the question that comes up surprisingly often in random conversation: is this number a prime? Nice features to answer that question and show the factors if it’s not prime, or tell you which n-th prime number it is. I see a fun car game with the kids in the future!
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joshuag75joshuag75

Good App

Clean and quick, instant results. Primes and Factors.
Ben🙏🏻😊Ben🙏🏻😊

Super fast factoring of numbers

Are you one of the numerical geeky sorts who likes primes? This is a fun tool to show you the factors of a number or whether it’s a prime number. Can’t say it’s useful but it’s a clean interface, simple and fun to check even really large numbers.
occasional cook toooccasional cook too

Found a five digit prime number

Nice program to determine if a number is prime. I’m waiting for the vision addition where I take a picture of the number and it indicates prime or not prime.
JkardachJkardach

Best prime number app I’ve ever used

👍👍!!! Definitely worth the price
Nicholas HarpingtonNicholas Harpington
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FAQ

What is the maximum integer Primality can check?

Primality can operate on integers in the range of 0 to 999,999,999,999. This extensive range allows for the analysis of very large numbers.

Does Primality show the position of prime numbers?

Yes, a popular feature is its ability to determine the prime ordinality of each prime found, such as identifying 97 as the 25th prime. This feature is available up to the 100,000th prime.

What devices does Primality support?

Primality is designed for iOS devices, specifically supporting the iPhone and iPod. It requires iOS 13 or higher.

How often is Primality updated?

The app was last updated on August 2, 2020, with version 1.00. It was initially released on June 15, 2020.

What is the age rating for Primality?

Primality has an age rating of 4+, making it suitable for a wide range of users interested in its mathematical functions.

Is Primality free to use?

Yes, Primality is available for free. There are no in-app purchases or advertisements, offering a straightforward user experience.

What makes Primality stand out from other math apps?

Primality focuses specifically on primality testing and prime factorization with a clean, powerful, and simple interface. Its ability to calculate prime ordinality is a unique feature.

What do users think of Primality?

Users have rated Primality highly, with an average of 4.9 stars from 24 ratings, indicating strong satisfaction with its functionality and performance.