Greatest Common Factor of 80, 30, 645

Greatest common factor or Greatest common divisor (GCD) can be calculated in two ways

• Greatest Common Factor of 80, 30, 645 by common division method
• Greatest Common Factor of 80, 30, 645 with matching the biggest common factor

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∴ So the GCF of the given numbers is 5 = 5

Factors of 80

List of positive integer factors of 80 that divides 80 without a remainder.

1,2,4,5,8,10,16,20,40,80

Factors of 30

List of positive integer factors of 30 that divides 30 without a remainder.

1,2,3,5,6,10,15,30

Factors of 645

List of positive integer factors of 645 that divides 645 without a remainder.

1,3,5,15,43,129,215,645

Greatest Common Factor

We found the factors 80,30,645 . The biggest common factor number is the GCF number.
So the greatest common factor 80,30,645 is 5.

Here are some samples of GCF of two or more Numbers calculations.

• GCF of 59, 88, 786
• GCF of 33, 66, 540
• GCF of 39, 42, 704
• GCF of 83, 37, 167
• GCF of 12, 51, 262

1. What is the GCF of 80, 30, 645?

Answer: GCF of 80, 30, 645 is 5.

2. How to Find the GCF of 80, 30, 645

Answer: Greatest Common Factor(GCF) of 80, 30, 645 = 5

Step 1: Divide all the numbers with common prime numbers having remainder zero.

Step 2: Then multiply all the prime factors GCF(80, 30, 645) = 5.