Greatest Common Factor of 21, 11, 31, 238

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

• Greatest Common Factor of 21, 11, 31, 238 by common division method
• Greatest Common Factor of 21, 11, 31, 238 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 11

List of positive integer factors of 11 that divides 11 without a remainder.

1,11

Factors of 31

List of positive integer factors of 31 that divides 31 without a remainder.

1,31

Factors of 238

List of positive integer factors of 238 that divides 238 without a remainder.

1,2,7,14,17,34,119,238

Greatest Common Factor

We found the factors 21,11,31,238 . The biggest common factor number is the GCF number.
So the greatest common factor 21,11,31,238 is 1.

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

• GCF of 15, 97, 14, 503
• GCF of 21, 64, 40, 966
• GCF of 45, 59, 77, 529
• GCF of 59, 64, 12, 848
• GCF of 56, 96, 70, 811

1. What is the GCF of 21, 11, 31, 238?

Answer: GCF of 21, 11, 31, 238 is 1.

2. How to Find the GCF of 21, 11, 31, 238

Answer: Greatest Common Factor(GCF) of 21, 11, 31, 238 = 1

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

Step 2: Then multiply all the prime factors GCF(21, 11, 31, 238) = 1.