Greatest Common Factor of 91, 81, 47, 77

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

• Greatest Common Factor of 91, 81, 47, 77 by common division method
• Greatest Common Factor of 91, 81, 47, 77 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 91

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

1,7,13,91

Factors of 81

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

1,3,9,27,81

Factors of 47

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

1,47

Factors of 77

List of positive integer factors of 77 that divides 77 without a remainder.

1,7,11,77

Greatest Common Factor

We found the factors 91,81,47,77 . The biggest common factor number is the GCF number.
So the greatest common factor 91,81,47,77 is 1.

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

• GCF of 51, 88, 13, 79
• GCF of 92, 95, 85, 90
• GCF of 84, 32, 44, 67
• GCF of 32, 97, 27, 89
• GCF of 82, 14, 54, 35

1. What is the GCF of 91, 81, 47, 77?

Answer: GCF of 91, 81, 47, 77 is 1.

2. How to Find the GCF of 91, 81, 47, 77

Answer: Greatest Common Factor(GCF) of 91, 81, 47, 77 = 1

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

Step 2: Then multiply all the prime factors GCF(91, 81, 47, 77) = 1.