How to use it
- Enter one positive integer and press Factorize to compute the result.
- Use the summary cards to check primality, divisor count, and the largest prime factor at a glance.
- Open the steps version when you need a factor tree or trial-division log for class notes.
FAQ
What range of integers is supported?
Enter any integer from 1 to 9,007,199,254,740,991 (2^53-1), which is the safe integer range in JavaScript.
What happens if factorization takes too long?
Trial division stops after about 1.5 seconds. The page shows the factors found so far and marks the result as incomplete so you can retry with a smaller number or use the step-by-step version.
What do divisor count, distinct primes, and largest prime factor mean?
The factorization line lists primes in ascending order. Exponents show repeated factors, the divisor count is the total number of positive divisors, and the largest prime factor is shown separately for quick checking.
Does this page show full division steps or a factor tree?
No. This page is the compact calculator. Use the linked Prime Factorization with Steps page if you need trial divisions, a factor tree, or classroom-style working.
Can I share or bookmark a result?
Yes. Copy result URL stores the current integer in the page URL so the same input can be reopened later.