odd, prime · 523rd positive integer
The number 523
523 is an odd prime number. It is the 523rd positive integer.
Quick reference
| Prime factorization | 523 (prime) |
| Divisors | 1, 523 |
| Binary | 1000001011 |
| Hexadecimal | 0x20B |
| Roman numeral | DXXIII |
| Digit sum | 10 |
| Properties | odd, prime |
Frequently asked
Is 523 a prime number?
Yes. 523 is prime — its only divisors are 1 and itself.
What are the factors of 523?
The factors (divisors) of 523 are 1, 523.
What is 523 in binary?
523 in binary is 1000001011. In hexadecimal it's 20B.
What is 523 as a Roman numeral?
523 in Roman numerals is DXXIII.
What's the digit sum of 523?
Adding the digits of 523: 5 + 2 + 3 = 10.