Greatest Common Factor of 87, 19, 77, 55, 990

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

• Greatest Common Factor of 87, 19, 77, 55, 990 by common division method
• Greatest Common Factor of 87, 19, 77, 55, 990 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 87

List of positive integer factors of 87 that divides 87 without a remainder.

1,3,29,87

Factors of 19

List of positive integer factors of 19 that divides 19 without a remainder.

1,19

Factors of 77

List of positive integer factors of 77 that divides 77 without a remainder.

1,7,11,77

Factors of 55

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

1,5,11,55

Factors of 990

List of positive integer factors of 990 that divides 990 without a remainder.

1,2,3,5,6,9,10,11,15,18,22,30,33,45,55,66,90,99,110,165,198,330,495,990

Greatest Common Factor

We found the factors 87,19,77,55,990 . The biggest common factor number is the GCF number.
So the greatest common factor 87,19,77,55,990 is 1.

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

• GCF of 12, 57, 35, 22, 885
• GCF of 86, 59, 26, 78, 271
• GCF of 61, 19, 30, 33, 822
• GCF of 83, 92, 94, 37, 379
• GCF of 16, 28, 24, 34, 511

1. What is the GCF of 87, 19, 77, 55, 990?

Answer: GCF of 87, 19, 77, 55, 990 is 1.

2. How to Find the GCF of 87, 19, 77, 55, 990

Answer: Greatest Common Factor(GCF) of 87, 19, 77, 55, 990 = 1

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

Step 2: Then multiply all the prime factors GCF(87, 19, 77, 55, 990) = 1.