Greatest Common Factor of 21, 17, 30, 76

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

• Greatest Common Factor of 21, 17, 30, 76 by common division method
• Greatest Common Factor of 21, 17, 30, 76 with matching the biggest common factor

Maximum 4 Number can be enter but you can reset

∴ 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 17

List of positive integer factors of 17 that divides 17 without a remainder.

1,17

Factors of 30

List of positive integer factors of 30 that divides 30 without a remainder.

1,2,3,5,6,10,15,30

Factors of 76

List of positive integer factors of 76 that divides 76 without a remainder.

1,2,4,19,38,76

Greatest Common Factor

We found the factors 21,17,30,76 . The biggest common factor number is the GCF number.
So the greatest common factor 21,17,30,76 is 1.

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

• GCF of 83, 62, 97, 53
• GCF of 69, 73, 90, 94
• GCF of 76, 64, 70, 44
• GCF of 88, 56, 85, 23
• GCF of 51, 81, 70, 34

1. What is the GCF of 21, 17, 30, 76?

Answer: GCF of 21, 17, 30, 76 is 1.

2. How to Find the GCF of 21, 17, 30, 76

Answer: Greatest Common Factor(GCF) of 21, 17, 30, 76 = 1

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

Step 2: Then multiply all the prime factors GCF(21, 17, 30, 76) = 1.