Greatest Common Factor of 72, 561, 643

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

• Greatest Common Factor of 72, 561, 643 by common division method
• Greatest Common Factor of 72, 561, 643 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 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

Factors of 643

List of positive integer factors of 643 that divides 643 without a remainder.

1,643

Greatest Common Factor

We found the factors 72,561,643 . The biggest common factor number is the GCF number.
So the greatest common factor 72,561,643 is 1.

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

• GCF of 29, 904, 732
• GCF of 91, 207, 666
• GCF of 98, 574, 276
• GCF of 40, 371, 793
• GCF of 17, 384, 418

1. What is the GCF of 72, 561, 643?

Answer: GCF of 72, 561, 643 is 1.

2. How to Find the GCF of 72, 561, 643

Answer: Greatest Common Factor(GCF) of 72, 561, 643 = 1

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

Step 2: Then multiply all the prime factors GCF(72, 561, 643) = 1.