# Prime Factorization Deluxe > Interactive tool for learning prime factorization, GCF, and LCM. (iPhone/iPad app by Ventura Educational Systems.) - Source: https://appshunter.io/ios/app/prime-factorization-deluxe/id971807388 (this page in markdown: same URL + `.md`) - Developer: [Ventura Educational Systems](https://appshunter.io/developer/371324172) - Category: Education, Games - Price: $1.99 - Rating: 1.00/5 from 1 App Store ratings · 1 written reviews indexed - Age rating: 4+ - Requires: iOS 12.0 · 15 MB - Languages: American English - Released: 2015-03-05 - Data updated: 2026-06-11 - Monetization: paid - User reviews in markdown: https://appshunter.io/ios/app/prime-factorization-deluxe/id971807388/reviews.md ## What is Prime Factorization Deluxe? Use Prime Factorization Deluxe to explore and learn how to find the prime factorization of a composite number. Use the slider to select a number up to 100 for factorization. If a composite number is selected the app prompts the user to select a factor using the slider. If a prime is selected it is indicated using a red marker. Tap the question mark for a random number up to 100 to be automatically selected. Choose factors for the given number to build a factor tree. Continue until the prime factorization has been found. Learn how to find the Greatest Common Factor (GCF) and Least Common Multiple (LCM). For GCF, use the number line slider to select two numbers. The factors of the two numbers are show in a table and the greatest common factor is highlighted. For LCM, choose two numbers. The multiples of the number are shown in a table. The least common multiple is highlighted in the table. The first step in the process of prime factorization is to select a factor for the given number. If a factor is selected a branch on the tree is filled in. This process continues until all the composite numbers in the tree have been factored leaving only primes. Composite numbers are shown in blue and primes are highlighted in red. By examing the prime factorizations of two numbers students will notice that the Greatest Common Factor of two numbers is precisely the product of the primes that are common to both. Therefore it follows that the common multiples of any two numbers must contain each of the primes exactly once and that the least common multiple is the smallest number that occurs in both sets. ## Key features - Interactive prime factorization tool - Factor tree visualization - Greatest Common Factor (GCF) calculation - Least Common Multiple (LCM) calculation - Number selection up to 100 - Visual distinction between prime and composite numbers ## Recent user reviews (1 of 1) All indexed reviews: https://appshunter.io/ios/app/prime-factorization-deluxe/id971807388/reviews.md ### 1/5 — Good concept but found wanting *2016-08-25* Phenomenal concept but the execution leaves you wanting for a better interaction. **Developer response:** The app is designed to make it easy for students to find the prime factors of a number. Rather than use the keyboard for entering the numbers, we used a slider on a number line. By doing this only numbers in the proper range can be selected. A prime number factor tree is a common device that teachers use to present the meaning of a prime factorization. This app leads students through the process of finding the prime factors of any composite number between 1 and 100. The technique is similar to the way a math teacher might present it. ## Frequently asked questions about Prime Factorization Deluxe ### What is Prime Factorization Deluxe? Prime Factorization Deluxe is an educational iPad app designed to help users learn and practice prime factorization, finding the Greatest Common Factor (GCF), and the Least Common Multiple (LCM) of numbers up to 100. ### How does Prime Factorization Deluxe teach prime factorization? The app uses an interactive factor tree. Users select numbers and factors, visually building the tree until only prime numbers remain, helping to understand the process. ### Can Prime Factorization Deluxe calculate GCF and LCM? Yes, the app provides dedicated sections for calculating the Greatest Common Factor (GCF) and Least Common Multiple (LCM) for two selected numbers, showing the factors and multiples in tables. ### What is the price of Prime Factorization Deluxe? Prime Factorization Deluxe is a paid application, available for $1.99. It does not feature in-app purchases or advertisements. ### What devices is Prime Factorization Deluxe compatible with? Currently, Prime Factorization Deluxe is supported on iPads. Users can check the app store for potential future updates regarding device compatibility. ### How often is Prime Factorization Deluxe updated? The app was last updated on June 26, 2024, indicating ongoing support and potential for future improvements or compatibility adjustments. ### What age rating does Prime Factorization Deluxe have? Prime Factorization Deluxe has an age rating of 4+, making it suitable for young learners and children exploring basic number theory concepts. ### Does Prime Factorization Deluxe have ads? No, Prime Factorization Deluxe is ad-free. As a paid application, it provides an uninterrupted learning experience without advertisements. ## Version history (last 4 releases) ### 4.0 — 2024-06-26 This version provides an update to recommended settings. ### 3.0 — 2021-04-29 Project settings have been validated and updated to recommended settings. Localization settings have been updated to ensure resources are in the correct directories. A synthetic speech function has been added. ### 2.0 — 2019-02-07 This version is a regular update for improved iOS compatibility. ### 1.0 — 2015-03-05 No release notes. ## Apps similar to Prime Factorization Deluxe | App | Rating | Price | Category | | --- | --- | --- | --- | | [Little Man Computer](https://appshunter.io/ios/app/little-man-computer/id1174092777) | 4.3 (6) | Free | Education | | [Mathemagics: Algebra Practice](https://appshunter.io/ios/app/mathemagics-algebra-practice/id500955086) | 4.7 (70) | $2.99 | Education | | [HAM Radio Technician](https://appshunter.io/ios/app/ham-radio-technician/id1532649043) | — | $3.99 | Education | | [LCM GCD Prime Factor Math](https://appshunter.io/ios/app/lcm-gcd-prime-factor-math/id1488738897) | — | $0.99 | Education | | [Learn by doing! 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Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-11.*