Greatest Common Factor of 99, 42, 91, 861

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

• Greatest Common Factor of 99, 42, 91, 861 by common division method
• Greatest Common Factor of 99, 42, 91, 861 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 99

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

1,3,9,11,33,99

Factors of 42

List of positive integer factors of 42 that divides 42 without a remainder.

1,2,3,6,7,14,21,42

Factors of 91

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

1,7,13,91

Factors of 861

List of positive integer factors of 861 that divides 861 without a remainder.

1,3,7,21,41,123,287,861

Greatest Common Factor

We found the factors 99,42,91,861 . The biggest common factor number is the GCF number.
So the greatest common factor 99,42,91,861 is 1.

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

• GCF of 10, 73, 39, 220
• GCF of 84, 67, 53, 898
• GCF of 40, 77, 97, 157
• GCF of 99, 27, 84, 856
• GCF of 51, 99, 71, 551

1. What is the GCF of 99, 42, 91, 861?

Answer: GCF of 99, 42, 91, 861 is 1.

2. How to Find the GCF of 99, 42, 91, 861

Answer: Greatest Common Factor(GCF) of 99, 42, 91, 861 = 1

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

Step 2: Then multiply all the prime factors GCF(99, 42, 91, 861) = 1.