Greatest Common Factor of 21, 47, 30, 625

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

• Greatest Common Factor of 21, 47, 30, 625 by common division method
• Greatest Common Factor of 21, 47, 30, 625 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 47

List of positive integer factors of 47 that divides 47 without a remainder.

1,47

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 625

List of positive integer factors of 625 that divides 625 without a remainder.

1,5,25,125,625

Greatest Common Factor

We found the factors 21,47,30,625 . The biggest common factor number is the GCF number.
So the greatest common factor 21,47,30,625 is 1.

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

• GCF of 43, 60, 99, 306
• GCF of 91, 11, 99, 706
• GCF of 55, 75, 52, 981
• GCF of 16, 41, 81, 301
• GCF of 41, 94, 41, 645

1. What is the GCF of 21, 47, 30, 625?

Answer: GCF of 21, 47, 30, 625 is 1.

2. How to Find the GCF of 21, 47, 30, 625

Answer: Greatest Common Factor(GCF) of 21, 47, 30, 625 = 1

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

Step 2: Then multiply all the prime factors GCF(21, 47, 30, 625) = 1.