odd, prime · 17th positive integer
The number 17
17 is an odd prime number. It's known as often cited as the most "random" number people pick when asked. It is the 17th positive integer.
Quick reference
| Prime factorization | 17 (prime) |
| Divisors | 1, 17 |
| Binary | 10001 |
| Hexadecimal | 0x11 |
| Roman numeral | XVII |
| Digit sum | 8 |
| Properties | odd, prime |
Why 17 is notable
Often cited as the most "random" number people pick when asked.
Frequently asked
Is 17 a prime number?
Yes. 17 is prime — its only divisors are 1 and itself.
What are the factors of 17?
The factors (divisors) of 17 are 1, 17.
What is 17 in binary?
17 in binary is 10001. In hexadecimal it's 11.
What is 17 as a Roman numeral?
17 in Roman numerals is XVII.
What's the digit sum of 17?
Adding the digits of 17: 1 + 7 = 8.