odd, composite · 291st positive integer
The number 291
291 is an odd composite number. It is the 291st positive integer.
Quick reference
| Prime factorization | 3 × 97 |
| Divisors | 1, 3, 97, 291 |
| Binary | 100100011 |
| Hexadecimal | 0x123 |
| Roman numeral | CCXCI |
| Digit sum | 12 |
| Properties | odd, composite |
Frequently asked
Is 291 a prime number?
No. 291 is composite. Its prime factorization is 3 × 97.
What are the factors of 291?
The factors (divisors) of 291 are 1, 3, 97, 291.
What is 291 in binary?
291 in binary is 100100011. In hexadecimal it's 123.
What is 291 as a Roman numeral?
291 in Roman numerals is CCXCI.
What's the digit sum of 291?
Adding the digits of 291: 2 + 9 + 1 = 12.