Greatest Common Factor of 640, 240, 421

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

• Greatest Common Factor of 640, 240, 421 by common division method
• Greatest Common Factor of 640, 240, 421 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 640

List of positive integer factors of 640 that divides 640 without a remainder.

1,2,4,5,8,10,16,20,32,40,64,80,128,160,320,640

Factors of 240

List of positive integer factors of 240 that divides 240 without a remainder.

1,2,3,4,5,6,8,10,12,15,16,20,24,30,40,48,60,80,120,240

Factors of 421

List of positive integer factors of 421 that divides 421 without a remainder.

1,421

Greatest Common Factor

We found the factors 640,240,421 . The biggest common factor number is the GCF number.
So the greatest common factor 640,240,421 is 1.

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

• GCF of 123, 831, 239
• GCF of 329, 512, 533
• GCF of 454, 270, 208
• GCF of 518, 335, 465
• GCF of 739, 719, 630

1. What is the GCF of 640, 240, 421?

Answer: GCF of 640, 240, 421 is 1.

2. How to Find the GCF of 640, 240, 421

Answer: Greatest Common Factor(GCF) of 640, 240, 421 = 1

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

Step 2: Then multiply all the prime factors GCF(640, 240, 421) = 1.