- 217 is a composite number.
- Prime factorization: 217 = 7 x 31
- The exponents in the prime factorization are 1 and 1. Adding one to each and multiplying we get (1 + 1)(1 + 1) = 2 x 2 = 4. Therefore 217 has 4 factors.
- Factors of 217: 1, 7, 31, 217
- Factor pairs: 217 = 1 x 217 or
**7**x**31** - Since 217 has no square factors, its square root cannot be simplified. √217 ≈ 14.
**731**

Excel file of puzzles and previous week’s factor solutions: 12 Factors 2014-08-25