Greatest Common Factor of 81, 63, 79, 57

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

• Greatest Common Factor of 81, 63, 79, 57 by common division method
• Greatest Common Factor of 81, 63, 79, 57 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 81

List of positive integer factors of 81 that divides 81 without a remainder.

1,3,9,27,81

Factors of 63

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

1,3,7,9,21,63

Factors of 79

List of positive integer factors of 79 that divides 79 without a remainder.

1,79

Factors of 57

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

1,3,19,57

Greatest Common Factor

We found the factors 81,63,79,57 . The biggest common factor number is the GCF number.
So the greatest common factor 81,63,79,57 is 1.

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

• GCF of 58, 70, 90, 31
• GCF of 24, 68, 62, 55
• GCF of 21, 76, 67, 37
• GCF of 93, 44, 64, 85
• GCF of 32, 95, 36, 96

1. What is the GCF of 81, 63, 79, 57?

Answer: GCF of 81, 63, 79, 57 is 1.

2. How to Find the GCF of 81, 63, 79, 57

Answer: Greatest Common Factor(GCF) of 81, 63, 79, 57 = 1

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

Step 2: Then multiply all the prime factors GCF(81, 63, 79, 57) = 1.