Greatest Common Factor of 1, 65, 28, 63

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

• Greatest Common Factor of 1, 65, 28, 63 by common division method
• Greatest Common Factor of 1, 65, 28, 63 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 1

List of positive integer factors of 1 that divides 1 without a remainder.

1

Factors of 65

List of positive integer factors of 65 that divides 65 without a remainder.

1,5,13,65

Factors of 28

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

1,2,4,7,14,28

Factors of 63

List of positive integer factors of 63 that divides 63 without a remainder.

1,3,7,9,21,63

Greatest Common Factor

We found the factors 1,65,28,63 . The biggest common factor number is the GCF number.
So the greatest common factor 1,65,28,63 is 1.

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

• GCF of 3, 15, 61, 95
• GCF of 5, 74, 62, 84
• GCF of 6, 52, 91, 17
• GCF of 7, 35, 63, 10
• GCF of 3, 94, 85, 21

1. What is the GCF of 1, 65, 28, 63?

Answer: GCF of 1, 65, 28, 63 is 1.

2. How to Find the GCF of 1, 65, 28, 63

Answer: Greatest Common Factor(GCF) of 1, 65, 28, 63 = 1

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

Step 2: Then multiply all the prime factors GCF(1, 65, 28, 63) = 1.