Greatest Common Factor of 42, 29, 87, 990

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

• Greatest Common Factor of 42, 29, 87, 990 by common division method
• Greatest Common Factor of 42, 29, 87, 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 42

List of positive integer factors of 42 that divides 42 without a remainder.

1,2,3,6,7,14,21,42

Factors of 29

List of positive integer factors of 29 that divides 29 without a remainder.

1,29

Factors of 87

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

1,3,29,87

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 42,29,87,990 . The biggest common factor number is the GCF number.
So the greatest common factor 42,29,87,990 is 1.

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

• GCF of 83, 77, 42, 460
• GCF of 10, 72, 52, 929
• GCF of 62, 38, 59, 492
• GCF of 72, 12, 72, 346
• GCF of 38, 57, 47, 949

1. What is the GCF of 42, 29, 87, 990?

Answer: GCF of 42, 29, 87, 990 is 1.

2. How to Find the GCF of 42, 29, 87, 990

Answer: Greatest Common Factor(GCF) of 42, 29, 87, 990 = 1

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

Step 2: Then multiply all the prime factors GCF(42, 29, 87, 990) = 1.