Greatest Common Factor of 331, 258, 21

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

• Greatest Common Factor of 331, 258, 21 by common division method
• Greatest Common Factor of 331, 258, 21 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 331

List of positive integer factors of 331 that divides 331 without a remainder.

1,331

Factors of 258

List of positive integer factors of 258 that divides 258 without a remainder.

1,2,3,6,43,86,129,258

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 331,258,21 . The biggest common factor number is the GCF number.
So the greatest common factor 331,258,21 is 1.

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

• GCF of 412, 970, 37
• GCF of 735, 195, 95
• GCF of 354, 415, 36
• GCF of 496, 355, 73
• GCF of 613, 926, 62

1. What is the GCF of 331, 258, 21?

Answer: GCF of 331, 258, 21 is 1.

2. How to Find the GCF of 331, 258, 21

Answer: Greatest Common Factor(GCF) of 331, 258, 21 = 1

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

Step 2: Then multiply all the prime factors GCF(331, 258, 21) = 1.