Prefacto - Prime Numbers
Daniel Springer Reference iPhoneiPadiPod touch
Prefacto - Prime Numbers is a paid Reference app for iPhone and iPad by Daniel Springer. Rated 4.7/5 from 19 ratings. Requires iOS 17.0.
- Rating
- 4.7
- 19 ratings
- Price
- 4.99 USD
- on the App Store
- Size
- 1 MB
- Age 4+
- Updated
- Sep 16
- 2026 · v9.0
Screenshots
About Prefacto - Prime Numbers
Discover the power of prime numbers with Prefacto! Prefacto is your go-to app for everything related to prime numbers. Whether you're a math enthusiast, a student, or just curious, this app provides a comprehensive set of tools—all without requiring an internet connection. FEATURES: - PRIME NUMBER VERIFICATION: Instantly check if any number is prime. - PRIME RANGE LISTING: Generate a list of prime numbers within any specified range. - PRIME FACTORIZATION: Break down any number into its prime factors quickly and efficiently. - GENERATE CUSTOM RANDOM PRIME NUMBERS: Create random prime numbers with customizable digits, up to 20 digits. - SPEED TEST: Find out which phone is the fastest between your friends by racing up to 100 million. - SAVE & SHARE RESULTS: Easily save or share your findings with others. WHY PREFACTO? - OFFLINE FUNCTIONALITY: Enjoy full functionality without needing an internet connection. - LIGHTWEIGHT: Designed to be efficient and avoid taking up significant storage space on your device. - SPEED: Experience fast calculations and instant results. - MAXIMUM POWER: Check the **highest** numbers of **any** other app, thanks to advanced algorithms. Dive into the fascinating world of prime numbers with Prefacto. Download now and start exploring!
Ratings & reviews
4.7
19 ratings
What’s new
Version 9.0 · Updated September 16, 2026
Updated for iOS 27
App privacy
The developer, Daniel Springer, reported these privacy practices to Apple.
Data Not Collected
The developer does not collect any data from this app.
Alternatives to Prefacto - Prime Numbers
Looking for apps like Prefacto - Prime Numbers? Here are 6 similar apps on the App Store. The highest rated is The Prime Number Finder (5.0/5), and 4 of the 6 are free to download.
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Numberus Prime
-
CheckPrimeNumbers
-
Multiply Master - Times Tables
-
The Prime Number Finder
5.0
-
RISC-V Assembly Simulator
5.0
-
Memorize Prime Numbers
3.0
| App | Rating | Price | Last updated | Compare |
|---|---|---|---|---|
| Prefacto - Prime Numbers | 4.7 / 5 (19 ratings) | 4.99 USD | September 16, 2026 | |
| Numberus Prime | – | 2.99 USD | Oct 14, 2024 | Compare |
| CheckPrimeNumbers | – | 0.99 USD | Sep 4, 2024 | Compare |
| Multiply Master - Times Tables | – | Free | Oct 19, 2026 | Compare |
| The Prime Number Finder | 5.0 / 5 (2) | Free | Feb 23, 2026 | Compare |
| RISC-V Assembly Simulator | 5.0 / 5 (1) | Free | Sep 4, 2026 | Compare |
| Memorize Prime Numbers | 3.0 / 5 (2) | Free | Oct 12, 2026 | Compare |