Greatest Common Factor of 31, 68, 61, 561

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

• Greatest Common Factor of 31, 68, 61, 561 by common division method
• Greatest Common Factor of 31, 68, 61, 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 31

List of positive integer factors of 31 that divides 31 without a remainder.

1,31

Factors of 68

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

1,2,4,17,34,68

Factors of 61

List of positive integer factors of 61 that divides 61 without a remainder.

1,61

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 31,68,61,561 . The biggest common factor number is the GCF number.
So the greatest common factor 31,68,61,561 is 1.

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

• GCF of 34, 73, 60, 822
• GCF of 60, 12, 30, 775
• GCF of 91, 16, 25, 651
• GCF of 45, 91, 84, 427
• GCF of 80, 34, 95, 667

1. What is the GCF of 31, 68, 61, 561?

Answer: GCF of 31, 68, 61, 561 is 1.

2. How to Find the GCF of 31, 68, 61, 561

Answer: Greatest Common Factor(GCF) of 31, 68, 61, 561 = 1

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

Step 2: Then multiply all the prime factors GCF(31, 68, 61, 561) = 1.