| 165 is a composite number. |
| Factor pairs: 165 = 1 x 165, 3 x 55, 5 x 33, 11 x 15 |
| Factors of 165: 1, 3, 5, 11, 15, 33, 55, 165 |
| Prime factorization: 165 = 3 x 5 x 11 |
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Excel file of puzzles and previous week’s factor solutions: 12 Factors 2014-06-30
| 164 is a composite number. |
| Factor pairs: 164 = 1 x 164, 2 x 82, or 4 x 41 |
| Factors of 164: 1, 2, 4, 41, 82, 164 |
| Prime factorization: 164 = 2 x 2 x 41, which can be written 164 = (2^2) x 4 |
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Excel file of puzzles and previous week’s factor solutions: 12 Factors 2014-06-30
| 162 is a composite number. |
| Factor pairs: 162 = 1 x 162, 2 x 81, 3 x 54, 6 x 27, 9 x 18 |
| Factors of 162: 1, 2, 3, 6, 9, 18, 27, 54, 81, 162 |
| Prime factorization: 162 = 2 x 3 x 3 x 3 x 3, which can be written 162 = 2 x (3^4) |
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Excel file of puzzles and previous week’s factor solutions: 12 Factors 2014-06-30
| 161 is a composite number. |
| Factor pairs: 161 = 1 x 161 or 7 x 23 |
| Factors of 161: 1, 7, 23, 161 |
| Prime factorization: 161 = 7 x 23 |
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Excel file of puzzles and previous week’s factor solutions: 12 Factors 2014-06-30
| 160 is a composite number. |
| Factor pairs: 160 = 1 x 160, 2 x 80, 4 x 40, 5 x 32, 8 x 20, or 10 x 16 |
| Factors of 160: 1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160 |
| Prime factorization: 160 = 2 x 2 x 2 x 2 x 2 x 5, which can also be written 160 = (2^5) x 5 |
160 = 2 + 3 + 5 + 7 + 11 + 13 + 17 + 19 + 23 + 29 + 31 (the sum of the first eleven prime numbers).
Excel file of puzzles and previous week’s factor solutions: 10 Factors 2014-06-23
| 159 is a composite number. |
| Factor pairs: 159 = 1 x 159 or 3 x 53 |
| Factors of 159: 1, 3, 53, 159 |
| Prime factorization: 159 = 3 x 53 |
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Excel file of puzzles and previous week’s factor solutions: 10 Factors 2014-06-23
| 158 is a composite number. |
| Factor pairs: 158 = 1 x 158 or 2 x 79 |
| Factors of 158: 1, 2, 79, 158 |
| Prime factorization: 158 = 2 x 79 |
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Excel file of puzzles and previous week’s factor solutions: 10 Factors 2014-06-23
| 156 is a composite number. |
| Factor pairs: 156 = 1 x 156, 2 x 78, 3 x 52, 4 x 39, 6 x 26, or 12 x 13 |
| Factors of 156: 1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78, 156 |
| Prime factorization: 156 = 2 x 2 x 3 x 13, which can be written (2^2) x 3 x 13 |
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Excel file of puzzles and previous week’s factor solutions: 10 Factors 2014-06-23
| 155 is a composite number. |
| Factor pairs: 155 = 1 x 155 or 5 x 31 |
| Factors of 155: 1, 5, 31, 155 |
| Prime factorization: 155 = 5 x 31 |
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Excel file of puzzles and previous week’s factor solutions: 10 Factors 2014-06-23
| 154 is a composite number. |
| Factor pairs: 154 = 1 x 154, 2 x 77, 7 x 22, 11 x 14 |
| Factors of 154: 1, 2, 7, 11, 14, 22, 77, 154 |
| Prime factorization: 154 = 2 x 7 x 11 |
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Excel file of puzzles and previous week’s factor solutions: 12 Factors 2014-06-16
