Greatest Common Factor of 20, 55, 66, 603

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

• Greatest Common Factor of 20, 55, 66, 603 by common division method
• Greatest Common Factor of 20, 55, 66, 603 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 66

List of positive integer factors of 66 that divides 66 without a remainder.

1,2,3,6,11,22,33,66

Factors of 603

List of positive integer factors of 603 that divides 603 without a remainder.

1,3,9,67,201,603

Greatest Common Factor

We found the factors 20,55,66,603 . The biggest common factor number is the GCF number.
So the greatest common factor 20,55,66,603 is 1.

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

• GCF of 10, 63, 13, 945
• GCF of 16, 94, 79, 318
• GCF of 72, 49, 74, 235
• GCF of 22, 68, 68, 269
• GCF of 33, 72, 31, 178

1. What is the GCF of 20, 55, 66, 603?

Answer: GCF of 20, 55, 66, 603 is 1.

2. How to Find the GCF of 20, 55, 66, 603

Answer: Greatest Common Factor(GCF) of 20, 55, 66, 603 = 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, 66, 603) = 1.