GCF for 10 and 255
"Greatest Common Factor" Calculator
What is the Greatest common Divisor of 10 and 255?
Answer: GCF of 10 and 255 is 5
(Five)
Finding GCF for 10 and 255 using all factors (divisors) listing
The first method to find GCF for numbers 10 and 255 is to list all factors for both numbers and pick the highest common one:
All factors of 10: 1, 2, 5, 10
All factors of 255: 1, 3, 5, 15, 17, 51, 85, 255
So the Greatest Common Factor for 10 and 255 is 5
Finding GCF for 10 and 255 by Prime Factorization
The second method to find GCF for numbers 10 and 255 is to list all Prime Factors for both numbers and multiply the common ones:
All Prime Factors of 10: 2, 5
All Prime Factors of 255: 3, 5, 17
As we can see there is only one Prime Factor common to both numbers. It is 5
So 5 is the Greatest Common Factor of 10 and 255
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GCF Table
| Number 1 | Number 2 | GCF |
|---|---|---|
| 1 | 255 | 1 |
| 2 | 255 | 1 |
| 3 | 255 | 3 |
| 4 | 255 | 1 |
| 5 | 255 | 5 |
| 6 | 255 | 3 |
| 7 | 255 | 1 |
| 8 | 255 | 1 |
| 9 | 255 | 3 |
| 10 | 255 | 5 |
| 11 | 255 | 1 |
| 12 | 255 | 3 |
| 13 | 255 | 1 |
| 14 | 255 | 1 |
| 15 | 255 | 15 |
| 16 | 255 | 1 |
| 17 | 255 | 17 |
| 18 | 255 | 3 |
| 19 | 255 | 1 |
| 20 | 255 | 5 |
| 21 | 255 | 3 |
| 22 | 255 | 1 |
| 23 | 255 | 1 |
| 24 | 255 | 3 |
| 25 | 255 | 5 |
| 26 | 255 | 1 |
| 27 | 255 | 3 |
| 28 | 255 | 1 |
| 29 | 255 | 1 |
| 30 | 255 | 15 |
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 10 and 255? (The answer is: 5). Select the first number (e.g. '10') and the second number (e.g. '255'). 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