GCF for 60, 90 and 120
"Greatest Common Factor of 3 Numbers" Calculator
What's the Greatest Common Factor (GCF) of 60, 90 and 120?
Answer
GCF of 60, 90 and 120 is
30
Common factors: 1, 2, 3, 5, 6, 10, 15, 30
30 divides all three: 60 ÷ 30 = 2, 90 ÷ 30 = 3, 120 ÷ 30 = 4 — and 2, 3 and 4 have no factor but 1 common to all of them, so no larger number divides all three.
60 = 22 × 3 × 5
90 = 2 × 32 × 5
120 = 23 × 3 × 5
| Prime | 60 | 90 | 120 | Lowest power |
|---|---|---|---|---|
| 2 | 22 | 2 | 23 | 2 |
| 3 | 3 | 32 | 3 | 3 |
| 5 | 5 | 5 | 5 | 5 |
GCF = 2 × 3 × 5 = 30
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See Also
- Least Common Multiple of 3 Numbers - Find the Least Common Multiple (LCM) of three numbers
- Greatest Common Factor - Find the Greatest Common Factor (GCF) of two numbers
- Least Common Multiple - Find the Least Common Multiple (LCM) of two numbers
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GCF Table
| 1st | 2nd | 3rd | GCF |
|---|---|---|---|
| 60 | 90 | 105 | 15 |
| 60 | 90 | 106 | 2 |
| 60 | 90 | 107 | 1 |
| 60 | 90 | 108 | 6 |
| 60 | 90 | 109 | 1 |
| 60 | 90 | 110 | 10 |
| 60 | 90 | 111 | 3 |
| 60 | 90 | 112 | 2 |
| 60 | 90 | 113 | 1 |
| 60 | 90 | 114 | 6 |
| 60 | 90 | 115 | 5 |
| 60 | 90 | 116 | 2 |
| 60 | 90 | 117 | 3 |
| 60 | 90 | 118 | 2 |
| 60 | 90 | 119 | 1 |
| 60 | 90 | 120 | 30 |
| 60 | 90 | 121 | 1 |
| 60 | 90 | 122 | 2 |
| 60 | 90 | 123 | 3 |
| 60 | 90 | 124 | 2 |
| 60 | 90 | 125 | 5 |
| 60 | 90 | 126 | 6 |
| 60 | 90 | 127 | 1 |
| 60 | 90 | 128 | 2 |
| 60 | 90 | 129 | 3 |
| 60 | 90 | 130 | 10 |
| 60 | 90 | 131 | 1 |
| 60 | 90 | 132 | 6 |
| 60 | 90 | 133 | 1 |
| 60 | 90 | 134 | 2 |