GCF for 12, 14 and 18
"Greatest Common Factor of 3 Numbers" Calculator
What's the Greatest Common Factor (GCF) of 12, 14 and 18?
Answer
GCF of 12, 14 and 18 is
2
Common factors: 1, 2
2 divides all three: 12 ÷ 2 = 6, 14 ÷ 2 = 7, 18 ÷ 2 = 9 — and 6, 7 and 9 have no factor but 1 common to all of them, so no larger number divides all three.
12 = 22 × 3
14 = 2 × 7
18 = 2 × 32
| Prime | 12 | 14 | 18 | Lowest power |
|---|---|---|---|---|
| 2 | 22 | 2 | 2 | 2 |
| 3 | 3 | — | 32 | — |
| 7 | — | 7 | — | — |
— = 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 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 |
|---|---|---|---|
| 3 | 12 | 14 | 1 |
| 4 | 12 | 14 | 2 |
| 5 | 12 | 14 | 1 |
| 6 | 12 | 14 | 2 |
| 7 | 12 | 14 | 1 |
| 8 | 12 | 14 | 2 |
| 9 | 12 | 14 | 1 |
| 10 | 12 | 14 | 2 |
| 11 | 12 | 14 | 1 |
| 12 | 12 | 14 | 2 |
| 12 | 13 | 14 | 1 |
| 12 | 14 | 14 | 2 |
| 12 | 14 | 15 | 1 |
| 12 | 14 | 16 | 2 |
| 12 | 14 | 17 | 1 |
| 12 | 14 | 18 | 2 |
| 12 | 14 | 19 | 1 |
| 12 | 14 | 20 | 2 |
| 12 | 14 | 21 | 1 |
| 12 | 14 | 22 | 2 |
| 12 | 14 | 23 | 1 |
| 12 | 14 | 24 | 2 |
| 12 | 14 | 25 | 1 |
| 12 | 14 | 26 | 2 |
| 12 | 14 | 27 | 1 |
| 12 | 14 | 28 | 2 |
| 12 | 14 | 29 | 1 |
| 12 | 14 | 30 | 2 |
| 12 | 14 | 31 | 1 |
| 12 | 14 | 32 | 2 |