A Multiplication Based Logic Puzzle

179 and Level 6

179 is a prime number.
Factor pairs: 179 = 1 x 179
Factors of 179: 1, 179
Prime factorization: none

How do we know that 179 is a prime number? The square root of 179 is an irrational number approximately equal to 13.38. If 179 were not a prime number, then it would be divisible by at least one prime number less than or equal to 13.38. Since 179 cannot be divided evenly by 2, 3, 5, 7, 11, or 13, we know that 179 is a prime number.

2014-28 Level 6

Excel file of puzzles and previous week’s factor solutions: 12 Factors 2014-07-14

2014-28 Level 6 Logic

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