GCF for 78 and 130
"Greatest Common Factor" Calculator
What is the Greatest common Divisor of 78 and 130?
Answer: GCF of 78 and 130 is 26
(Twenty-six)
Finding GCF for 78 and 130 using all factors (divisors) listing
The first method to find GCF for numbers 78 and 130 is to list all factors for both numbers and pick the highest common one:
All factors of 78: 1, 2, 3, 6, 13, 26, 39, 78
All factors of 130: 1, 2, 5, 10, 13, 26, 65, 130
So the Greatest Common Factor for 78 and 130 is 26
Finding GCF for 78 and 130 by Prime Factorization
The second method to find GCF for numbers 78 and 130 is to list all Prime Factors for both numbers and multiply the common ones:
All Prime Factors of 78: 2, 3, 13
All Prime Factors of 130: 2, 5, 13
As we can see there are Prime Factors common to both numbers: 2, 13
Now we need to multiply them to find GCF: 2 × 13 = 26
See Also
- Least Common Multiple - Find the Least Common Multiple (LCM) of two numbers
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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 78 and 130? (The answer is: 26). Select the first number (e.g. '78') and the second number (e.g. '130'). 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