Greatest Common Factor of 19, 31, 21, 173

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

• Greatest Common Factor of 19, 31, 21, 173 by common division method
• Greatest Common Factor of 19, 31, 21, 173 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 19

List of positive integer factors of 19 that divides 19 without a remainder.

1,19

Factors of 31

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

1,31

Factors of 21

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

1,3,7,21

Factors of 173

List of positive integer factors of 173 that divides 173 without a remainder.

1,173

Greatest Common Factor

We found the factors 19,31,21,173 . The biggest common factor number is the GCF number.
So the greatest common factor 19,31,21,173 is 1.

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

• GCF of 77, 57, 52, 215
• GCF of 42, 33, 70, 751
• GCF of 69, 13, 77, 990
• GCF of 72, 73, 65, 293
• GCF of 92, 82, 58, 238

1. What is the GCF of 19, 31, 21, 173?

Answer: GCF of 19, 31, 21, 173 is 1.

2. How to Find the GCF of 19, 31, 21, 173

Answer: Greatest Common Factor(GCF) of 19, 31, 21, 173 = 1

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

Step 2: Then multiply all the prime factors GCF(19, 31, 21, 173) = 1.