Greatest Common Factor of 20, 55, 403

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

• Greatest Common Factor of 20, 55, 403 by common division method
• Greatest Common Factor of 20, 55, 403 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 20

List of positive integer factors of 20 that divides 20 without a remainder.

1,2,4,5,10,20

Factors of 55

List of positive integer factors of 55 that divides 55 without a remainder.

1,5,11,55

Factors of 403

List of positive integer factors of 403 that divides 403 without a remainder.

1,13,31,403

Greatest Common Factor

We found the factors 20,55,403 . The biggest common factor number is the GCF number.
So the greatest common factor 20,55,403 is 1.

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

• GCF of 70, 80, 192
• GCF of 90, 93, 184
• GCF of 52, 66, 809
• GCF of 69, 51, 879
• GCF of 57, 81, 231

1. What is the GCF of 20, 55, 403?

Answer: GCF of 20, 55, 403 is 1.

2. How to Find the GCF of 20, 55, 403

Answer: Greatest Common Factor(GCF) of 20, 55, 403 = 1

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

Step 2: Then multiply all the prime factors GCF(20, 55, 403) = 1.