When 2^359 is divided by 359, the remainder is 2, so **359** is VERY LIKELY a prime number. Scroll down past the puzzle to know for sure.

Print the puzzles or type the factors on this excel file: 10 Factors 2015-01-19

- 359 is a prime number.
- Prime factorization: 359 is prime.
- The exponent of prime number 359 is 1. Adding 1 to that exponent we get (1 + 1) = 2. Therefore 359 has exactly 2 factors.
- Factors of 359: 1, 359
- Factor pairs: 359 = 1 x 359
- 359 has no square factors that allow its square root to be simplified. √359 ≈ 18.947

**How do we know that ****359**** is a prime number?** If 359 were not a prime number, then it would be divisible by at least one prime number less than or equal to √359 ≈ 18.947. Since 359 cannot be divided evenly by 2, 3, 5, 7, 11, 13, or 17, we know that 359 is a prime number.