Greatest Common Factor of 771, 663, 20

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

• Greatest Common Factor of 771, 663, 20 by common division method
• Greatest Common Factor of 771, 663, 20 with matching the biggest common factor

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∴ GCF of numbers is 1 because of no common factors present between them.

Factors of 771

List of positive integer factors of 771 that divides 771 without a remainder.

1,3,257,771

Factors of 663

List of positive integer factors of 663 that divides 663 without a remainder.

1,3,13,17,39,51,221,663

Factors of 20

List of positive integer factors of 20 that divides 20 without a remainder.

1,2,4,5,10,20

Greatest Common Factor

We found the factors 771,663,20 . The biggest common factor number is the GCF number.
So the greatest common factor 771,663,20 is 1.

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

• GCF of 815, 202, 28
• GCF of 285, 799, 20
• GCF of 599, 936, 32
• GCF of 120, 803, 26
• GCF of 689, 303, 17

1. What is the GCF of 771, 663, 20?

Answer: GCF of 771, 663, 20 is 1.

2. How to Find the GCF of 771, 663, 20

Answer: Greatest Common Factor(GCF) of 771, 663, 20 = 1

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

Step 2: Then multiply all the prime factors GCF(771, 663, 20) = 1.