odd, prime · 197th positive integer
The number 197
197 is an odd prime number. It is the 197th positive integer.
Quick reference
| Prime factorization | 197 (prime) |
| Divisors | 1, 197 |
| Binary | 11000101 |
| Hexadecimal | 0xC5 |
| Roman numeral | CXCVII |
| Digit sum | 17 |
| Properties | odd, prime |
Reading 197 in NumGrid context
For 197, the underlying data on this page comes from classical number theory plus NumGrid solver-derived puzzle statistics. The breakdown above is the federal record; the paragraphs below add the per-entity context that makes the headline numbers usable for a real decision rather than just a data lookup.
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 197’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 197 a prime number?
Yes. 197 is prime — its only divisors are 1 and itself.
What are the factors of 197?
The factors (divisors) of 197 are 1, 197.
What is 197 in binary?
197 in binary is 11000101. In hexadecimal it's C5.
What is 197 as a Roman numeral?
197 in Roman numerals is CXCVII.
What's the digit sum of 197?
Adding the digits of 197: 1 + 9 + 7 = 17.