Greatest Common Factor of 21, 138, 931

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

• Greatest Common Factor of 21, 138, 931 by common division method
• Greatest Common Factor of 21, 138, 931 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 138

List of positive integer factors of 138 that divides 138 without a remainder.

1,2,3,6,23,46,69,138

Factors of 931

List of positive integer factors of 931 that divides 931 without a remainder.

1,7,19,49,133,931

Greatest Common Factor

We found the factors 21,138,931 . The biggest common factor number is the GCF number.
So the greatest common factor 21,138,931 is 1.

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

• GCF of 87, 768, 373
• GCF of 23, 971, 332
• GCF of 64, 997, 272
• GCF of 53, 761, 517
• GCF of 31, 832, 776

1. What is the GCF of 21, 138, 931?

Answer: GCF of 21, 138, 931 is 1.

2. How to Find the GCF of 21, 138, 931

Answer: Greatest Common Factor(GCF) of 21, 138, 931 = 1

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

Step 2: Then multiply all the prime factors GCF(21, 138, 931) = 1.