odd, composite · 133rd positive integer
The number 133
133 is an odd composite number. It is the 133rd positive integer.
Quick reference
| Prime factorization | 7 × 19 |
| Divisors | 1, 7, 19, 133 |
| Binary | 10000101 |
| Hexadecimal | 0x85 |
| Roman numeral | CXXXIII |
| Digit sum | 7 |
| Properties | odd, composite |
Reading 133 in NumGrid context
133 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.
Every number on this page links back to classical number theory plus NumGrid solver-derived puzzle statistics; the methodology page describes the inputs, refresh cadence, and known limitations of the underlying data product.
Practical use of this page is in combination with the comparison and ranking pages elsewhere on the site, which surface the same data for 133’s peers within positive integers within the NumGrid target pool. A single-entity reading without peer context can be misleading when an entity is an outlier on one axis but typical on another.
Frequently asked
Is 133 a prime number?
No. 133 is composite. Its prime factorization is 7 × 19.
What are the factors of 133?
The factors (divisors) of 133 are 1, 7, 19, 133.
What is 133 in binary?
133 in binary is 10000101. In hexadecimal it's 85.
What is 133 as a Roman numeral?
133 in Roman numerals is CXXXIII.
What's the digit sum of 133?
Adding the digits of 133: 1 + 3 + 3 = 7.