GCD of 642, 128, 137, 917 Calculator

Given Input numbers are 642, 128, 137, 917

In the factoring method, we have to find the divisors of all numbers

Divisors of 642 :

The positive integer divisors of 642 that completely divides 642 are.

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

Divisors of 128 :

The positive integer divisors of 128 that completely divides 128 are.

1, 2, 4, 8, 16, 32, 64, 128

Divisors of 137 :

The positive integer divisors of 137 that completely divides 137 are.

1, 137

Divisors of 917 :

The positive integer divisors of 917 that completely divides 917 are.

1, 7, 131, 917

GCD of numbers is the greatest common divisor

So, the GCD (642, 128, 137, 917) = 1.

Given numbers are 642, 128, 137, 917

The list of prime factors of all numbers are

Prime factors of 642 are 2 x 3 x 107

Prime factors of 128 are 2 x 2 x 2 x 2 x 2 x 2 x 2

Prime factors of 137 are 137

Prime factors of 917 are 7 x 131

The above numbers do not have any common prime factor. So GCD is 1

Given numbers are 642, 128, 137, 917

GCD of 2 numbers formula is GCD(a, b) = ( a x b) / LCM(a, b)

Apply this formula for all numbers.

Step1:

LCM(642, 128) = 41088

GCD(642, 128) = ( 642 x 128 ) / 41088

= 642 / 128

= 642

Step2:

LCM(2, 137) = 274

GCD(2, 137) = ( 2 x 137 ) / 274

= 2 / 137

= 2

Step3:

LCM(1, 917) = 917

GCD(1, 917) = ( 1 x 917 ) / 917

= 1 / 917

= 1

So, Greatest Common Divisor of 642, 128, 137, 917 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 986, 247, 593, 123
• GCD of 318, 845, 956, 154
• GCD of 538, 919, 386, 948
• GCD of 427, 616, 346, 109
• GCD of 171, 482, 814, 431

Given numbers are 642, 128, 137, 917
The greatest common divisor of numbers 642, 128, 137, 917 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 642, 128, 137, 917 is 1.

1. What is the GCD of 642, 128, 137, 917?

GCD of given numbers 642, 128, 137, 917 is 1

2. How to calculate the greatest common divisor of 642, 128, 137, 917?

We can find the highest common divisor of 642, 128, 137, 917 easily using the prime factorization method. Just list the prime factors of all numbers and pick the highest common factor which is the GCD of 642, 128, 137, 917 i.e 1.

3. How can I use the GCD of 642, 128, 137, 917Calculator?

Out the numbers 642, 128, 137, 917 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.