Make use of GCF Calculator to quickly find the Greatest Common Factor of numbers 12, 24 i.e. 12 largest integer by which both the numbers can be divided.

Greatest common factor (GCF) of 12 and 24 is **12**.

GCF(12,24) = 12

*Greatest common factor* or Greatest common divisor (GCD) can be calculated in following way;

- Greatest Common Factor of 12 and 24 by prime factorization method
- Greatest Common Factor of 12 and 24 by matching factors method

**Prime Factorization of 12**

2 | 12 |

2 | 6 |

3 | 3 |

1 |

Prime factors of 12 are 2,3. Prime factorization of **12** in exponential form is:

12 = 2^{2}×3^{1}

**Prime Factorization of 24**

2 | 24 |

2 | 12 |

2 | 6 |

3 | 3 |

1 |

Prime factors of 24 are 2,3. Prime factorization of **24** in exponential form is:

24 = 2^{3}×3^{1}

∴ So by taking common prime factors GCF of 12 and 24 is 12

**Factors of 12**

List of positive integer factors of 12 that divides 12 without a remainder.

1,2,3,4,6,12

**Factors of 24**

List of positive integer factors of 24 that divides 24 without a remainder.

1,2,3,4,6,8,12,24

**Greatest Common Factor**

We found the factors and prime factorization of 12 and 24. The biggest common factor number is the **GCF** number.

So the **greatest common factor 12 and 24** is **12**.

Also check out the Least Common Multiple of 12 and 24

(i) The GCF of 12 and 24 is associative

GCF of 12 and 24 = GCF of 24 and 12

1. What is the GCF of 12 and 24?

Answer: GCF of 12 and 24 is 12.

2. What are the Factors of 12?

Answer: Factors of 12 are 1, 2, 3, 4, 6, 12. There are 6 integers that are factors of 12. The greatest factor of 12 is 12.

3. What are the Factors of 24?

Answer: Factors of 24 are 1, 2, 3, 4, 6, 8, 12, 24. There are 8 integers that are factors of 24. The greatest factor of 24 is 24.

4. How to Find the GCF of 12 and 24?

Answer:

Greatest Common Factor of 12 and 24 = 12

Step 1: Find the prime factorization of 12

12 = 2 x 2 x 3

Step 2: Find the prime factorization of 24

24 = 2 x 2 x 2 x 3

Step 3: Multiply those factors both numbers have in common in steps i) or ii) above to find the gcf:

GCF = 2 x 2 x 3 = 12

Step 4: Therefore, the greatest common factor of 12 and 24 is 12