Greatest Common Factor of 21, 42, 18, 719

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

• Greatest Common Factor of 21, 42, 18, 719 by common division method
• Greatest Common Factor of 21, 42, 18, 719 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 21

List of positive integer factors of 21 that divides 21 without a remainder.

1,3,7,21

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 18

List of positive integer factors of 18 that divides 18 without a remainder.

1,2,3,6,9,18

Factors of 719

List of positive integer factors of 719 that divides 719 without a remainder.

1,719

Greatest Common Factor

We found the factors 21,42,18,719 . The biggest common factor number is the GCF number.
So the greatest common factor 21,42,18,719 is 1.

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

• GCF of 48, 87, 15, 902
• GCF of 30, 30, 51, 931
• GCF of 11, 29, 47, 107
• GCF of 53, 34, 57, 823
• GCF of 70, 83, 92, 271

1. What is the GCF of 21, 42, 18, 719?

Answer: GCF of 21, 42, 18, 719 is 1.

2. How to Find the GCF of 21, 42, 18, 719

Answer: Greatest Common Factor(GCF) of 21, 42, 18, 719 = 1

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

Step 2: Then multiply all the prime factors GCF(21, 42, 18, 719) = 1.