Greatest Common Factor of 47, 68, 21, 561

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

• Greatest Common Factor of 47, 68, 21, 561 by common division method
• Greatest Common Factor of 47, 68, 21, 561 with matching the biggest common factor

Maximum 4 Number can be enter but you can reset

∴ GCF of numbers is 1 because of no common factors present between them.

Factors of 47

List of positive integer factors of 47 that divides 47 without a remainder.

1,47

Factors of 68

List of positive integer factors of 68 that divides 68 without a remainder.

1,2,4,17,34,68

Factors of 21

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

1,3,7,21

Factors of 561

List of positive integer factors of 561 that divides 561 without a remainder.

1,3,11,17,33,51,187,561

Greatest Common Factor

We found the factors 47,68,21,561 . The biggest common factor number is the GCF number.
So the greatest common factor 47,68,21,561 is 1.

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

• GCF of 17, 51, 50, 749
• GCF of 73, 13, 28, 109
• GCF of 75, 90, 53, 864
• GCF of 10, 30, 16, 995
• GCF of 66, 17, 35, 770

1. What is the GCF of 47, 68, 21, 561?

Answer: GCF of 47, 68, 21, 561 is 1.

2. How to Find the GCF of 47, 68, 21, 561

Answer: Greatest Common Factor(GCF) of 47, 68, 21, 561 = 1

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

Step 2: Then multiply all the prime factors GCF(47, 68, 21, 561) = 1.