Contents

# Prime Factors

Compute the prime factors of a given natural number.

A prime number is only evenly divisible by itself and 1.

Note that 1 is not a prime number.

## Example

What are the prime factors of 60?

- Our first divisor is 2. 2 goes into 60, leaving 30.
- 2 goes into 30, leaving 15.
  - 2 doesn't go cleanly into 15. So let's move on to our next divisor, 3.
- 3 goes cleanly into 15, leaving 5.
  - 3 does not go cleanly into 5. The next possible factor is 4.
  - 4 does not go cleanly into 5. The next possible factor is 5.
- 5 does go cleanly into 5.
- We're left only with 1, so now, we're done.

Our successful divisors in that computation represent the list of prime
factors of 60: 2, 2, 3, and 5.

You can check this yourself:

- 2 * 2 * 3 * 5
- = 4 * 15
- = 60
- Success!


To run the tests:

```sh
$ gradle test
```

For more detailed info about the Java track see the [help page](http://exercism.io/languages/java).


## Source

The Prime Factors Kata by Uncle Bob [http://butunclebob.com/ArticleS.UncleBob.ThePrimeFactorsKata](http://butunclebob.com/ArticleS.UncleBob.ThePrimeFactorsKata)

## Submitting Incomplete Solutions
It's possible to submit an incomplete solution so you can see how others have completed the exercise.

Version data entries

53 entries across 53 versions & 1 rubygems

Version	Path
trackler-2.2.1.27	tracks/java/exercises/prime-factors/README.md
trackler-2.2.1.26	tracks/java/exercises/prime-factors/README.md
trackler-2.2.1.25	tracks/java/exercises/prime-factors/README.md
trackler-2.2.1.24	tracks/java/exercises/prime-factors/README.md
trackler-2.2.1.23	tracks/java/exercises/prime-factors/README.md
trackler-2.2.1.22	tracks/java/exercises/prime-factors/README.md
trackler-2.2.1.21	tracks/java/exercises/prime-factors/README.md
trackler-2.2.1.20	tracks/java/exercises/prime-factors/README.md
trackler-2.2.1.19	tracks/java/exercises/prime-factors/README.md
trackler-2.2.1.18	tracks/java/exercises/prime-factors/README.md
trackler-2.2.1.17	tracks/java/exercises/prime-factors/README.md
trackler-2.2.1.16	tracks/java/exercises/prime-factors/README.md
trackler-2.2.1.15	tracks/java/exercises/prime-factors/README.md
trackler-2.2.1.14	tracks/java/exercises/prime-factors/README.md
trackler-2.2.1.13	tracks/java/exercises/prime-factors/README.md
trackler-2.2.1.12	tracks/java/exercises/prime-factors/README.md
trackler-2.2.1.11	tracks/java/exercises/prime-factors/README.md
trackler-2.2.1.10	tracks/java/exercises/prime-factors/README.md
trackler-2.2.1.9	tracks/java/exercises/prime-factors/README.md
trackler-2.2.1.8	tracks/java/exercises/prime-factors/README.md