Greatest Common Factor of 4, 3, 91, 21

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

• Greatest Common Factor of 4, 3, 91, 21 by common division method
• Greatest Common Factor of 4, 3, 91, 21 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 4

List of positive integer factors of 4 that divides 4 without a remainder.

1,2,4

Factors of 3

List of positive integer factors of 3 that divides 3 without a remainder.

1,3

Factors of 91

List of positive integer factors of 91 that divides 91 without a remainder.

1,7,13,91

Factors of 21

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

1,3,7,21

Greatest Common Factor

We found the factors 4,3,91,21 . The biggest common factor number is the GCF number.
So the greatest common factor 4,3,91,21 is 1.

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

• GCF of 3, 6, 13, 96
• GCF of 2, 8, 51, 35
• GCF of 9, 9, 74, 89
• GCF of 6, 1, 35, 81
• GCF of 4, 1, 87, 26

1. What is the GCF of 4, 3, 91, 21?

Answer: GCF of 4, 3, 91, 21 is 1.

2. How to Find the GCF of 4, 3, 91, 21

Answer: Greatest Common Factor(GCF) of 4, 3, 91, 21 = 1

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

Step 2: Then multiply all the prime factors GCF(4, 3, 91, 21) = 1.