Greatest Common Factor of 561, 145, 987

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

• Greatest Common Factor of 561, 145, 987 by common division method
• Greatest Common Factor of 561, 145, 987 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 561

List of positive integer factors of 561 that divides 561 without a remainder.

1,3,11,17,33,51,187,561

Factors of 145

List of positive integer factors of 145 that divides 145 without a remainder.

1,5,29,145

Factors of 987

List of positive integer factors of 987 that divides 987 without a remainder.

1,3,7,21,47,141,329,987

Greatest Common Factor

We found the factors 561,145,987 . The biggest common factor number is the GCF number.
So the greatest common factor 561,145,987 is 1.

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

• GCF of 676, 598, 372
• GCF of 960, 400, 400
• GCF of 779, 817, 873
• GCF of 432, 419, 123
• GCF of 365, 553, 184

1. What is the GCF of 561, 145, 987?

Answer: GCF of 561, 145, 987 is 1.

2. How to Find the GCF of 561, 145, 987

Answer: Greatest Common Factor(GCF) of 561, 145, 987 = 1

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

Step 2: Then multiply all the prime factors GCF(561, 145, 987) = 1.