odd, composite, triangular · 253rd positive integer
The number 253
253 is an odd composite number. It is the 253rd positive integer.
Quick reference
| Prime factorization | 11 × 23 |
| Divisors | 1, 11, 23, 253 |
| Binary | 11111101 |
| Hexadecimal | 0xFD |
| Roman numeral | CCLIII |
| Digit sum | 10 |
| Properties | odd, composite, triangular |
Frequently asked
Is 253 a prime number?
No. 253 is composite. Its prime factorization is 11 × 23.
What are the factors of 253?
The factors (divisors) of 253 are 1, 11, 23, 253.
What is 253 in binary?
253 in binary is 11111101. In hexadecimal it's FD.
What is 253 as a Roman numeral?
253 in Roman numerals is CCLIII.
What's the digit sum of 253?
Adding the digits of 253: 2 + 5 + 3 = 10.