odd, prime · 173rd positive integer
The number 173
173 is an odd prime number. It is the 173rd positive integer.
Quick reference
| Prime factorization | 173 (prime) |
| Divisors | 1, 173 |
| Binary | 10101101 |
| Hexadecimal | 0xAD |
| Roman numeral | CLXXIII |
| Digit sum | 11 |
| Properties | odd, prime |
Reading 173 in NumGrid context
173 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 173’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 173 a prime number?
Yes. 173 is prime — its only divisors are 1 and itself.
What are the factors of 173?
The factors (divisors) of 173 are 1, 173.
What is 173 in binary?
173 in binary is 10101101. In hexadecimal it's AD.
What is 173 as a Roman numeral?
173 in Roman numerals is CLXXIII.
What's the digit sum of 173?
Adding the digits of 173: 1 + 7 + 3 = 11.