Greatest Common Factor of 60, 98, 21, 66

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

• Greatest Common Factor of 60, 98, 21, 66 by common division method
• Greatest Common Factor of 60, 98, 21, 66 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 60

List of positive integer factors of 60 that divides 60 without a remainder.

1,2,3,4,5,6,10,12,15,20,30,60

Factors of 98

List of positive integer factors of 98 that divides 98 without a remainder.

1,2,7,14,49,98

Factors of 21

List of positive integer factors of 21 that divides 21 without a remainder.

1,3,7,21

Factors of 66

List of positive integer factors of 66 that divides 66 without a remainder.

1,2,3,6,11,22,33,66

Greatest Common Factor

We found the factors 60,98,21,66 . The biggest common factor number is the GCF number.
So the greatest common factor 60,98,21,66 is 1.

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

• GCF of 11, 56, 65, 72
• GCF of 45, 83, 51, 43
• GCF of 12, 30, 57, 97
• GCF of 52, 35, 30, 24
• GCF of 51, 66, 87, 42

1. What is the GCF of 60, 98, 21, 66?

Answer: GCF of 60, 98, 21, 66 is 1.

2. How to Find the GCF of 60, 98, 21, 66

Answer: Greatest Common Factor(GCF) of 60, 98, 21, 66 = 1

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

Step 2: Then multiply all the prime factors GCF(60, 98, 21, 66) = 1.