Greatest Common Factor of 91, 81, 45, 57, 29

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

• Greatest Common Factor of 91, 81, 45, 57, 29 by common division method
• Greatest Common Factor of 91, 81, 45, 57, 29 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 45

List of positive integer factors of 45 that divides 45 without a remainder.

1,3,5,9,15,45

Factors of 57

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

1,3,19,57

Factors of 29

List of positive integer factors of 29 that divides 29 without a remainder.

1,29

Greatest Common Factor

We found the factors 91,81,45,57,29 . The biggest common factor number is the GCF number.
So the greatest common factor 91,81,45,57,29 is 1.

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

• GCF of 80, 63, 23, 26, 99
• GCF of 96, 22, 30, 74, 52
• GCF of 83, 19, 35, 27, 19
• GCF of 98, 15, 31, 59, 97
• GCF of 38, 90, 19, 19, 81

1. What is the GCF of 91, 81, 45, 57, 29?

Answer: GCF of 91, 81, 45, 57, 29 is 1.

2. How to Find the GCF of 91, 81, 45, 57, 29

Answer: Greatest Common Factor(GCF) of 91, 81, 45, 57, 29 = 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, 45, 57, 29) = 1.