Greatest Common Factor of 21, 47, 57, 913

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

• Greatest Common Factor of 21, 47, 57, 913 by common division method
• Greatest Common Factor of 21, 47, 57, 913 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 21

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

1,3,7,21

Factors of 47

List of positive integer factors of 47 that divides 47 without a remainder.

1,47

Factors of 57

List of positive integer factors of 57 that divides 57 without a remainder.

1,3,19,57

Factors of 913

List of positive integer factors of 913 that divides 913 without a remainder.

1,11,83,913

Greatest Common Factor

We found the factors 21,47,57,913 . The biggest common factor number is the GCF number.
So the greatest common factor 21,47,57,913 is 1.

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

• GCF of 61, 57, 51, 899
• GCF of 45, 99, 63, 234
• GCF of 53, 74, 23, 950
• GCF of 49, 52, 20, 215
• GCF of 57, 85, 43, 672

1. What is the GCF of 21, 47, 57, 913?

Answer: GCF of 21, 47, 57, 913 is 1.

2. How to Find the GCF of 21, 47, 57, 913

Answer: Greatest Common Factor(GCF) of 21, 47, 57, 913 = 1

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

Step 2: Then multiply all the prime factors GCF(21, 47, 57, 913) = 1.