Greatest Common Factor of 690, 679, 18

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

• Greatest Common Factor of 690, 679, 18 by common division method
• Greatest Common Factor of 690, 679, 18 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 690

List of positive integer factors of 690 that divides 690 without a remainder.

1,2,3,5,6,10,15,23,30,46,69,115,138,230,345,690

Factors of 679

List of positive integer factors of 679 that divides 679 without a remainder.

1,7,97,679

Factors of 18

List of positive integer factors of 18 that divides 18 without a remainder.

1,2,3,6,9,18

Greatest Common Factor

We found the factors 690,679,18 . The biggest common factor number is the GCF number.
So the greatest common factor 690,679,18 is 1.

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

• GCF of 738, 556, 41
• GCF of 726, 533, 66
• GCF of 831, 900, 24
• GCF of 912, 672, 65
• GCF of 657, 378, 31

1. What is the GCF of 690, 679, 18?

Answer: GCF of 690, 679, 18 is 1.

2. How to Find the GCF of 690, 679, 18

Answer: Greatest Common Factor(GCF) of 690, 679, 18 = 1

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

Step 2: Then multiply all the prime factors GCF(690, 679, 18) = 1.