Greatest Common Factor of 42, 79, 25, 861

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

• Greatest Common Factor of 42, 79, 25, 861 by common division method
• Greatest Common Factor of 42, 79, 25, 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 42

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

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

Factors of 79

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

1,79

Factors of 25

List of positive integer factors of 25 that divides 25 without a remainder.

1,5,25

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 42,79,25,861 . The biggest common factor number is the GCF number.
So the greatest common factor 42,79,25,861 is 1.

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

• GCF of 98, 87, 14, 791
• GCF of 10, 85, 42, 649
• GCF of 12, 46, 34, 783
• GCF of 47, 24, 99, 262
• GCF of 56, 56, 11, 175

1. What is the GCF of 42, 79, 25, 861?

Answer: GCF of 42, 79, 25, 861 is 1.

2. How to Find the GCF of 42, 79, 25, 861

Answer: Greatest Common Factor(GCF) of 42, 79, 25, 861 = 1

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

Step 2: Then multiply all the prime factors GCF(42, 79, 25, 861) = 1.