Greatest Common Factor of 91, 21, 25, 860

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

• Greatest Common Factor of 91, 21, 25, 860 by common division method
• Greatest Common Factor of 91, 21, 25, 860 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 21

List of positive integer factors of 21 that divides 21 without a remainder.

1,3,7,21

Factors of 25

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

1,5,25

Factors of 860

List of positive integer factors of 860 that divides 860 without a remainder.

1,2,4,5,10,20,43,86,172,215,430,860

Greatest Common Factor

We found the factors 91,21,25,860 . The biggest common factor number is the GCF number.
So the greatest common factor 91,21,25,860 is 1.

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

• GCF of 88, 19, 54, 399
• GCF of 43, 78, 81, 270
• GCF of 30, 19, 10, 303
• GCF of 69, 18, 42, 638
• GCF of 50, 14, 37, 877

1. What is the GCF of 91, 21, 25, 860?

Answer: GCF of 91, 21, 25, 860 is 1.

2. How to Find the GCF of 91, 21, 25, 860

Answer: Greatest Common Factor(GCF) of 91, 21, 25, 860 = 1

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

Step 2: Then multiply all the prime factors GCF(91, 21, 25, 860) = 1.