even, composite · 1000th positive integer
The number 1000
1000 is an even composite number. It's known as a millennium. It is the 1000th positive integer.
Quick reference
| Prime factorization | 2 × 2 × 2 × 5 × 5 × 5 |
| Divisors | 1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 125, 200, 250, 500, 1000 |
| Binary | 1111101000 |
| Hexadecimal | 0x3E8 |
| Roman numeral | M |
| Digit sum | 1 |
| Properties | even, composite |
Why 1000 is notable
A millennium.
Frequently asked
Is 1000 a prime number?
No. 1000 is composite. Its prime factorization is 2 × 2 × 2 × 5 × 5 × 5.
What are the factors of 1000?
The factors (divisors) of 1000 are 1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 125, 200, 250, 500, 1000.
What is 1000 in binary?
1000 in binary is 1111101000. In hexadecimal it's 3E8.
What is 1000 as a Roman numeral?
1000 in Roman numerals is M.
What's the digit sum of 1000?
Adding the digits of 1000: 1 + 0 + 0 + 0 = 1.