Greatest Common Factor of 21, 99, 31, 542

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

• Greatest Common Factor of 21, 99, 31, 542 by common division method
• Greatest Common Factor of 21, 99, 31, 542 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 99

List of positive integer factors of 99 that divides 99 without a remainder.

1,3,9,11,33,99

Factors of 31

List of positive integer factors of 31 that divides 31 without a remainder.

1,31

Factors of 542

List of positive integer factors of 542 that divides 542 without a remainder.

1,2,271,542

Greatest Common Factor

We found the factors 21,99,31,542 . The biggest common factor number is the GCF number.
So the greatest common factor 21,99,31,542 is 1.

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

• GCF of 97, 62, 27, 563
• GCF of 78, 72, 37, 806
• GCF of 93, 54, 32, 583
• GCF of 52, 93, 95, 745
• GCF of 54, 27, 56, 102

1. What is the GCF of 21, 99, 31, 542?

Answer: GCF of 21, 99, 31, 542 is 1.

2. How to Find the GCF of 21, 99, 31, 542

Answer: Greatest Common Factor(GCF) of 21, 99, 31, 542 = 1

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

Step 2: Then multiply all the prime factors GCF(21, 99, 31, 542) = 1.