odd, prime · 157th positive integer
The number 157
157 is an odd prime number. It is the 157th positive integer.
Quick reference
| Prime factorization | 157 (prime) |
| Divisors | 1, 157 |
| Binary | 10011101 |
| Hexadecimal | 0x9D |
| Roman numeral | CLVII |
| Digit sum | 13 |
| Properties | odd, prime |
Frequently asked
Is 157 a prime number?
Yes. 157 is prime — its only divisors are 1 and itself.
What are the factors of 157?
The factors (divisors) of 157 are 1, 157.
What is 157 in binary?
157 in binary is 10011101. In hexadecimal it's 9D.
What is 157 as a Roman numeral?
157 in Roman numerals is CLVII.
What's the digit sum of 157?
Adding the digits of 157: 1 + 5 + 7 = 13.