GCF for 70 and 850

What is the Greatest Common Factor of 70 and 850?

Answer: GCF of 70 and 850 is 10

(Ten)

Finding GCF for 70 and 850 using all factors (divisors) listing

The first method to find GCF for numbers 70 and 850 is to list all factors for both numbers and pick the highest common one:

All factors of 70: 1, 2, 5, 7, 10, 14, 35, 70

All factors of 850: 1, 2, 5, 10, 17, 25, 34, 50, 85, 170, 425, 850

So the Greatest Common Factor for 70 and 850 is 10

Finding GCF for 70 and 850 by Prime Factorization

The second method to find GCF for numbers 70 and 850 is to list all Prime Factors for both numbers and multiply the common ones:

All Prime Factors of 70: 2, 5, 7

All Prime Factors of 850: 2, 5, 5, 17

As we can see there are Prime Factors common to both numbers: 2, 5

Now we need to multiply them to find GCF: 2 × 5 = 10

Related Calculations

GCF Table

Number 1Number 2GCF
558505
568502
578501
588502
598501
6085010
618501
628502
638501
648502
658505
668502
678501
6885034
698501
7085010
718501
728502
738501
748502
7585025
768502
778501
788502
798501
8085010
818501
828502
838501
848502

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 Factor of 70 and 850? (The answer is: 10). Select the first number (e.g. '70') and the second number (e.g. '850'). 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

FAQ

What is the Greatest Common Factor of 70 and 850?

GCF of 70 and 850 is 10