Greatest Common Factor of 55, 98, 72, 561

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

• Greatest Common Factor of 55, 98, 72, 561 by common division method
• Greatest Common Factor of 55, 98, 72, 561 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 55

List of positive integer factors of 55 that divides 55 without a remainder.

1,5,11,55

Factors of 98

List of positive integer factors of 98 that divides 98 without a remainder.

1,2,7,14,49,98

Factors of 72

List of positive integer factors of 72 that divides 72 without a remainder.

1,2,3,4,6,8,9,12,18,24,36,72

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 55,98,72,561 . The biggest common factor number is the GCF number.
So the greatest common factor 55,98,72,561 is 1.

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

• GCF of 69, 83, 24, 516
• GCF of 94, 30, 20, 775
• GCF of 97, 99, 35, 571
• GCF of 64, 48, 46, 100
• GCF of 91, 58, 12, 735

1. What is the GCF of 55, 98, 72, 561?

Answer: GCF of 55, 98, 72, 561 is 1.

2. How to Find the GCF of 55, 98, 72, 561

Answer: Greatest Common Factor(GCF) of 55, 98, 72, 561 = 1

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

Step 2: Then multiply all the prime factors GCF(55, 98, 72, 561) = 1.