Greatest Common Factor of 646, 742, 420, 978, 904

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

• Greatest Common Factor of 646, 742, 420, 978, 904 by common division method
• Greatest Common Factor of 646, 742, 420, 978, 904 with matching the biggest common factor

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∴ So the GCF of the given numbers is 2 = 2

Factors of 646

List of positive integer factors of 646 that divides 646 without a remainder.

1,2,17,19,34,38,323,646

Factors of 742

List of positive integer factors of 742 that divides 742 without a remainder.

1,2,7,14,53,106,371,742

Factors of 420

List of positive integer factors of 420 that divides 420 without a remainder.

1,2,3,4,5,6,7,10,12,14,15,20,21,28,30,35,42,60,70,84,105,140,210,420

Factors of 978

List of positive integer factors of 978 that divides 978 without a remainder.

1,2,3,6,163,326,489,978

Factors of 904

List of positive integer factors of 904 that divides 904 without a remainder.

1,2,4,8,113,226,452,904

Greatest Common Factor

We found the factors 646,742,420,978,904 . The biggest common factor number is the GCF number.
So the greatest common factor 646,742,420,978,904 is 2.

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

• GCF of 223, 746, 910, 578, 973
• GCF of 991, 395, 615, 179, 643
• GCF of 311, 612, 691, 647, 831
• GCF of 918, 169, 249, 541, 728
• GCF of 299, 532, 969, 280, 762

1. What is the GCF of 646, 742, 420, 978, 904?

Answer: GCF of 646, 742, 420, 978, 904 is 2.

2. How to Find the GCF of 646, 742, 420, 978, 904

Answer: Greatest Common Factor(GCF) of 646, 742, 420, 978, 904 = 2

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

Step 2: Then multiply all the prime factors GCF(646, 742, 420, 978, 904) = 2.