Greatest Common Factor of 421, 100, 642

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

• Greatest Common Factor of 421, 100, 642 by common division method
• Greatest Common Factor of 421, 100, 642 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 421

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

1,421

Factors of 100

List of positive integer factors of 100 that divides 100 without a remainder.

1,2,4,5,10,20,25,50,100

Factors of 642

List of positive integer factors of 642 that divides 642 without a remainder.

1,2,3,6,107,214,321,642

Greatest Common Factor

We found the factors 421,100,642 . The biggest common factor number is the GCF number.
So the greatest common factor 421,100,642 is 1.

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

• GCF of 496, 552, 232
• GCF of 875, 217, 804
• GCF of 216, 460, 986
• GCF of 174, 940, 903
• GCF of 164, 173, 176

1. What is the GCF of 421, 100, 642?

Answer: GCF of 421, 100, 642 is 1.

2. How to Find the GCF of 421, 100, 642

Answer: Greatest Common Factor(GCF) of 421, 100, 642 = 1

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

Step 2: Then multiply all the prime factors GCF(421, 100, 642) = 1.