GCF of 108 and 24 (Greatest Common Factor)
"Greatest Common Factor" Calculator
What is the Greatest Common Divisor of 108 and 24?
Answer
GCF of 108 and 24 is
12
(Twelve)
Finding GCF for 108 and 24 using all factors (divisors) listing
The first method to find GCF for numbers 108 and 24 is to list all factors for both numbers and pick the highest common one:
All factors of 108: 1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 108
All factors of 24: 1, 2, 3, 4, 6, 8, 12, 24
So the Greatest Common Factor for 108 and 24 is 12
Finding GCF for 108 and 24 by Prime Factorization
The second method to find GCF for numbers 108 and 24 is to list all Prime Factors for both numbers and multiply the common ones:
All Prime Factors of 108: 2, 2, 3, 3, 3
All Prime Factors of 24: 2, 2, 2, 3
As we can see there are Prime Factors common to both numbers: 2, 2, 3
Now we need to multiply them to find GCF: 2 × 2 × 3 = 12
Related Calculations
See Also
- Least Common Multiple - Find the Least Common Multiple (LCM) of two numbers
About "Greatest Common Factor" Calculator
This calculator will help you find the greatest common factor (GCF) of two numbers. For example, it can help you find out what is the Greatest Common Divisor of 108 and 24? (The answer is: 12). Select the first number (e.g. '108') and the second number (e.g. '24'). After that hit the 'Calculate' button.
Greatest Common Factor (GCF) also known as the Greatest Common Divisor (GCD) or Highest Common Factor (HCF) - it is the largest positive integer that divides each of the integers with zero remainder.
"Greatest Common Factor" Calculator
GCF Table
| Number 1 | Number 2 | GCF |
|---|---|---|
| 108 | 9 | 9 |
| 108 | 10 | 2 |
| 108 | 11 | 1 |
| 108 | 12 | 12 |
| 108 | 13 | 1 |
| 108 | 14 | 2 |
| 108 | 15 | 3 |
| 108 | 16 | 4 |
| 108 | 17 | 1 |
| 108 | 18 | 18 |
| 108 | 19 | 1 |
| 108 | 20 | 4 |
| 108 | 21 | 3 |
| 108 | 22 | 2 |
| 108 | 23 | 1 |
| 108 | 24 | 12 |
| 108 | 25 | 1 |
| 108 | 26 | 2 |
| 108 | 27 | 27 |
| 108 | 28 | 4 |
| 108 | 29 | 1 |
| 108 | 30 | 6 |
| 108 | 31 | 1 |
| 108 | 32 | 4 |
| 108 | 33 | 3 |
| 108 | 34 | 2 |
| 108 | 35 | 1 |
| 108 | 36 | 36 |
| 108 | 37 | 1 |
| 108 | 38 | 2 |
FAQ
What is the Greatest Common Divisor of 108 and 24?
GCF of 108 and 24 is 12
How to find the GCF of 108 and 24?
You can find the GCF of 108 and 24 by listing all factors of both numbers and picking the greatest common one, or by prime factorization. The GCF of 108 and 24 is 12.
What prime factors do 108 and 24 share?
The prime factorizations of 108 and 24 have 2 × 2 × 3 in common, and multiplying those shared primes gives 12 — exactly the greatest common factor.
How does the GCF reduce the fraction 108/24?
Divide the numerator and the denominator by the GCF 12: 108 ÷ 12 = 9 and 24 ÷ 12 = 2. So 108/24 in lowest terms is 9/2.
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