GCF (HCF) of 55 and 60
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What is the Greatest Common Divisor of 55 and 60?
Answer
GCF (HCF) of 55 and 60 is
5
Common factors: 1, 5
5 divides both: 55 ÷ 5 = 11, 60 ÷ 5 = 12 — and 11 and 12 share no factor but 1, so no larger number divides both.
55 = 5 × 11
60 = 22 × 3 × 5
| Prime | 55 | 60 | Lowest power |
|---|---|---|---|
| 2 | — | 22 | — |
| 3 | — | 3 | — |
| 5 | 5 | 5 | 5 |
| 11 | 11 | — | — |
— = power 0: the prime is not a factor of this number, so it cannot be in the GCF.
GCF = 5
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See Also
- Least Common Multiple - Find the Least Common Multiple (LCM) of two numbers
- Greatest Common Factor of 3 Numbers - Find the Greatest Common Factor (GCF) of three numbers
- Least Common Multiple of 3 Numbers - Find the Least Common Multiple (LCM) of three numbers
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