Greatest Common Factor of 77, 63, 13, 155

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

• Greatest Common Factor of 77, 63, 13, 155 by common division method
• Greatest Common Factor of 77, 63, 13, 155 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 77

List of positive integer factors of 77 that divides 77 without a remainder.

1,7,11,77

Factors of 63

List of positive integer factors of 63 that divides 63 without a remainder.

1,3,7,9,21,63

Factors of 13

List of positive integer factors of 13 that divides 13 without a remainder.

1,13

Factors of 155

List of positive integer factors of 155 that divides 155 without a remainder.

1,5,31,155

Greatest Common Factor

We found the factors 77,63,13,155 . The biggest common factor number is the GCF number.
So the greatest common factor 77,63,13,155 is 1.

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

• GCF of 13, 79, 78, 540
• GCF of 57, 90, 49, 886
• GCF of 76, 13, 55, 172
• GCF of 49, 50, 86, 276
• GCF of 68, 17, 31, 607

1. What is the GCF of 77, 63, 13, 155?

Answer: GCF of 77, 63, 13, 155 is 1.

2. How to Find the GCF of 77, 63, 13, 155

Answer: Greatest Common Factor(GCF) of 77, 63, 13, 155 = 1

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

Step 2: Then multiply all the prime factors GCF(77, 63, 13, 155) = 1.