odd, prime · 857th positive integer
The number 857
857 is an odd prime number. It is the 857th positive integer.
Quick reference
| Prime factorization | 857 (prime) |
| Divisors | 1, 857 |
| Binary | 1101011001 |
| Hexadecimal | 0x359 |
| Roman numeral | DCCCLVII |
| Digit sum | 20 |
| Properties | odd, prime |
Frequently asked
Is 857 a prime number?
Yes. 857 is prime — its only divisors are 1 and itself.
What are the factors of 857?
The factors (divisors) of 857 are 1, 857.
What is 857 in binary?
857 in binary is 1101011001. In hexadecimal it's 359.
What is 857 as a Roman numeral?
857 in Roman numerals is DCCCLVII.
What's the digit sum of 857?
Adding the digits of 857: 8 + 5 + 7 = 20.