Greatest Common Factor of 81, 91, 31, 971

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

• Greatest Common Factor of 81, 91, 31, 971 by common division method
• Greatest Common Factor of 81, 91, 31, 971 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 91

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

1,7,13,91

Factors of 31

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

1,31

Factors of 971

List of positive integer factors of 971 that divides 971 without a remainder.

1,971

Greatest Common Factor

We found the factors 81,91,31,971 . The biggest common factor number is the GCF number.
So the greatest common factor 81,91,31,971 is 1.

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

• GCF of 61, 37, 36, 104
• GCF of 47, 10, 69, 299
• GCF of 87, 83, 30, 393
• GCF of 79, 63, 52, 514
• GCF of 79, 76, 31, 137

1. What is the GCF of 81, 91, 31, 971?

Answer: GCF of 81, 91, 31, 971 is 1.

2. How to Find the GCF of 81, 91, 31, 971

Answer: Greatest Common Factor(GCF) of 81, 91, 31, 971 = 1

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

Step 2: Then multiply all the prime factors GCF(81, 91, 31, 971) = 1.