odd, composite · 305th positive integer
The number 305
305 is an odd composite number. It is the 305th positive integer.
Quick reference
| Prime factorization | 5 × 61 |
| Divisors | 1, 5, 61, 305 |
| Binary | 100110001 |
| Hexadecimal | 0x131 |
| Roman numeral | CCCV |
| Digit sum | 8 |
| Properties | odd, composite |
Frequently asked
Is 305 a prime number?
No. 305 is composite. Its prime factorization is 5 × 61.
What are the factors of 305?
The factors (divisors) of 305 are 1, 5, 61, 305.
What is 305 in binary?
305 in binary is 100110001. In hexadecimal it's 131.
What is 305 as a Roman numeral?
305 in Roman numerals is CCCV.
What's the digit sum of 305?
Adding the digits of 305: 3 + 0 + 5 = 8.