Greatest Common Factor of 51, 55, 77, 28

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

• Greatest Common Factor of 51, 55, 77, 28 by common division method
• Greatest Common Factor of 51, 55, 77, 28 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 51

List of positive integer factors of 51 that divides 51 without a remainder.

1,3,17,51

Factors of 55

List of positive integer factors of 55 that divides 55 without a remainder.

1,5,11,55

Factors of 77

List of positive integer factors of 77 that divides 77 without a remainder.

1,7,11,77

Factors of 28

List of positive integer factors of 28 that divides 28 without a remainder.

1,2,4,7,14,28

Greatest Common Factor

We found the factors 51,55,77,28 . The biggest common factor number is the GCF number.
So the greatest common factor 51,55,77,28 is 1.

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

• GCF of 23, 29, 46, 20
• GCF of 69, 11, 72, 21
• GCF of 20, 24, 93, 70
• GCF of 17, 20, 83, 71
• GCF of 13, 77, 76, 22

1. What is the GCF of 51, 55, 77, 28?

Answer: GCF of 51, 55, 77, 28 is 1.

2. How to Find the GCF of 51, 55, 77, 28

Answer: Greatest Common Factor(GCF) of 51, 55, 77, 28 = 1

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

Step 2: Then multiply all the prime factors GCF(51, 55, 77, 28) = 1.