Greatest Common Factor of 21, 16, 43, 778

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

• Greatest Common Factor of 21, 16, 43, 778 by common division method
• Greatest Common Factor of 21, 16, 43, 778 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 16

List of positive integer factors of 16 that divides 16 without a remainder.

1,2,4,8,16

Factors of 43

List of positive integer factors of 43 that divides 43 without a remainder.

1,43

Factors of 778

List of positive integer factors of 778 that divides 778 without a remainder.

1,2,389,778

Greatest Common Factor

We found the factors 21,16,43,778 . The biggest common factor number is the GCF number.
So the greatest common factor 21,16,43,778 is 1.

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

• GCF of 68, 27, 24, 726
• GCF of 90, 27, 79, 694
• GCF of 86, 36, 25, 310
• GCF of 52, 74, 56, 103
• GCF of 65, 97, 32, 606

1. What is the GCF of 21, 16, 43, 778?

Answer: GCF of 21, 16, 43, 778 is 1.

2. How to Find the GCF of 21, 16, 43, 778

Answer: Greatest Common Factor(GCF) of 21, 16, 43, 778 = 1

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

Step 2: Then multiply all the prime factors GCF(21, 16, 43, 778) = 1.