GCF (HCF) of 12 and 34
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What is the Greatest Common Divisor of 12 and 34?
Answer
GCF (HCF) of 12 and 34 is
2
Common factors: 1, 2
2 divides both: 12 ÷ 2 = 6, 34 ÷ 2 = 17 — and 6 and 17 share no factor but 1, so no larger number divides both.
12 = 22 × 3
34 = 2 × 17
| Prime | 12 | 34 | Lowest power |
|---|---|---|---|
| 2 | 22 | 2 | 2 |
| 3 | 3 | — | — |
| 17 | — | 17 | — |
— = power 0: the prime is not a factor of this number, so it cannot be in the GCF.
GCF = 2
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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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