odd, composite · 159th positive integer
The number 159
159 is an odd composite number. It is the 159th positive integer.
Quick reference
| Prime factorization | 3 × 53 |
| Divisors | 1, 3, 53, 159 |
| Binary | 10011111 |
| Hexadecimal | 0x9F |
| Roman numeral | CLIX |
| Digit sum | 15 |
| Properties | odd, composite |
Reading 159 in NumGrid context
159 is one of the data points covered by this site’s integer properties and number-guessing puzzles dataset. The detail above comes directly from classical number theory plus NumGrid solver-derived puzzle statistics; the context that follows situates the headline numbers against the broader distribution across positive integers within the NumGrid target pool.
The methodology behind every numeric value on this page is publicly documented on the classical number theory plus NumGrid solver-derived puzzle statistics portal and described in detail on this site’s methodology page. Refresh cadence varies by underlying series; the page surfaces the as-of date for each number so readers can trace any figure back to the source release.
For readers using this page as a decision input, the related-entity pages elsewhere on the site provide the comparison set. The most useful comparison for 159 is typically a peer within positive integers within the NumGrid target pool with similar size, similar exposure, or similar geography — not the national-level summary alone.
Frequently asked
Is 159 a prime number?
No. 159 is composite. Its prime factorization is 3 × 53.
What are the factors of 159?
The factors (divisors) of 159 are 1, 3, 53, 159.
What is 159 in binary?
159 in binary is 10011111. In hexadecimal it's 9F.
What is 159 as a Roman numeral?
159 in Roman numerals is CLIX.
What's the digit sum of 159?
Adding the digits of 159: 1 + 5 + 9 = 15.