Greatest Common Factor of 99, 61, 20, 787

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

• Greatest Common Factor of 99, 61, 20, 787 by common division method
• Greatest Common Factor of 99, 61, 20, 787 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 99

List of positive integer factors of 99 that divides 99 without a remainder.

1,3,9,11,33,99

Factors of 61

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

1,61

Factors of 20

List of positive integer factors of 20 that divides 20 without a remainder.

1,2,4,5,10,20

Factors of 787

List of positive integer factors of 787 that divides 787 without a remainder.

1,787

Greatest Common Factor

We found the factors 99,61,20,787 . The biggest common factor number is the GCF number.
So the greatest common factor 99,61,20,787 is 1.

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

• GCF of 66, 72, 49, 980
• GCF of 33, 65, 68, 379
• GCF of 74, 79, 81, 953
• GCF of 56, 74, 40, 637
• GCF of 78, 24, 85, 509

1. What is the GCF of 99, 61, 20, 787?

Answer: GCF of 99, 61, 20, 787 is 1.

2. How to Find the GCF of 99, 61, 20, 787

Answer: Greatest Common Factor(GCF) of 99, 61, 20, 787 = 1

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

Step 2: Then multiply all the prime factors GCF(99, 61, 20, 787) = 1.