Greatest Common Factor of 851, 389, 21

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

• Greatest Common Factor of 851, 389, 21 by common division method
• Greatest Common Factor of 851, 389, 21 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 851

List of positive integer factors of 851 that divides 851 without a remainder.

1,23,37,851

Factors of 389

List of positive integer factors of 389 that divides 389 without a remainder.

1,389

Factors of 21

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

1,3,7,21

Greatest Common Factor

We found the factors 851,389,21 . The biggest common factor number is the GCF number.
So the greatest common factor 851,389,21 is 1.

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

• GCF of 489, 597, 89
• GCF of 701, 632, 86
• GCF of 346, 221, 53
• GCF of 214, 650, 25
• GCF of 712, 599, 12

1. What is the GCF of 851, 389, 21?

Answer: GCF of 851, 389, 21 is 1.

2. How to Find the GCF of 851, 389, 21

Answer: Greatest Common Factor(GCF) of 851, 389, 21 = 1

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

Step 2: Then multiply all the prime factors GCF(851, 389, 21) = 1.