Greatest Common Factor of 390, 685, 221

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

• Greatest Common Factor of 390, 685, 221 by common division method
• Greatest Common Factor of 390, 685, 221 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 390

List of positive integer factors of 390 that divides 390 without a remainder.

1,2,3,5,6,10,13,15,26,30,39,65,78,130,195,390

Factors of 685

List of positive integer factors of 685 that divides 685 without a remainder.

1,5,137,685

Factors of 221

List of positive integer factors of 221 that divides 221 without a remainder.

1,13,17,221

Greatest Common Factor

We found the factors 390,685,221 . The biggest common factor number is the GCF number.
So the greatest common factor 390,685,221 is 1.

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

• GCF of 786, 672, 180
• GCF of 157, 776, 141
• GCF of 192, 172, 139
• GCF of 487, 964, 585
• GCF of 487, 879, 855

1. What is the GCF of 390, 685, 221?

Answer: GCF of 390, 685, 221 is 1.

2. How to Find the GCF of 390, 685, 221

Answer: Greatest Common Factor(GCF) of 390, 685, 221 = 1

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

Step 2: Then multiply all the prime factors GCF(390, 685, 221) = 1.