Greatest Common Factor of 21, 85, 31, 953

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

• Greatest Common Factor of 21, 85, 31, 953 by common division method
• Greatest Common Factor of 21, 85, 31, 953 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 85

List of positive integer factors of 85 that divides 85 without a remainder.

1,5,17,85

Factors of 31

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

1,31

Factors of 953

List of positive integer factors of 953 that divides 953 without a remainder.

1,953

Greatest Common Factor

We found the factors 21,85,31,953 . The biggest common factor number is the GCF number.
So the greatest common factor 21,85,31,953 is 1.

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

• GCF of 92, 79, 25, 339
• GCF of 68, 35, 19, 223
• GCF of 44, 94, 17, 793
• GCF of 49, 78, 69, 231
• GCF of 52, 44, 73, 729

1. What is the GCF of 21, 85, 31, 953?

Answer: GCF of 21, 85, 31, 953 is 1.

2. How to Find the GCF of 21, 85, 31, 953

Answer: Greatest Common Factor(GCF) of 21, 85, 31, 953 = 1

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

Step 2: Then multiply all the prime factors GCF(21, 85, 31, 953) = 1.