Greatest Common Factor of 138, 457, 420

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

• Greatest Common Factor of 138, 457, 420 by common division method
• Greatest Common Factor of 138, 457, 420 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 138

List of positive integer factors of 138 that divides 138 without a remainder.

1,2,3,6,23,46,69,138

Factors of 457

List of positive integer factors of 457 that divides 457 without a remainder.

1,457

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

Greatest Common Factor

We found the factors 138,457,420 . The biggest common factor number is the GCF number.
So the greatest common factor 138,457,420 is 1.

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

• GCF of 903, 236, 796
• GCF of 137, 367, 534
• GCF of 954, 971, 949
• GCF of 682, 277, 489
• GCF of 368, 885, 614

1. What is the GCF of 138, 457, 420?

Answer: GCF of 138, 457, 420 is 1.

2. How to Find the GCF of 138, 457, 420

Answer: Greatest Common Factor(GCF) of 138, 457, 420 = 1

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

Step 2: Then multiply all the prime factors GCF(138, 457, 420) = 1.