GCD of 637, 639, 175, 420 Calculator

Given Input numbers are 637, 639, 175, 420

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

Divisors of 637 :

The positive integer divisors of 637 that completely divides 637 are.

1, 7, 13, 49, 91, 637

Divisors of 639 :

The positive integer divisors of 639 that completely divides 639 are.

1, 3, 9, 71, 213, 639

Divisors of 175 :

The positive integer divisors of 175 that completely divides 175 are.

1, 5, 7, 25, 35, 175

Divisors of 420 :

The positive integer divisors of 420 that completely divides 420 are.

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

GCD of numbers is the greatest common divisor

So, the GCD (637, 639, 175, 420) = 1.

Given numbers are 637, 639, 175, 420

The list of prime factors of all numbers are

Prime factors of 637 are 7 x 7 x 13

Prime factors of 639 are 3 x 3 x 71

Prime factors of 175 are 5 x 5 x 7

Prime factors of 420 are 2 x 2 x 3 x 5 x 7

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

Given numbers are 637, 639, 175, 420

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

Apply this formula for all numbers.

Step1:

LCM(637, 639) = 407043

GCD(637, 639) = ( 637 x 639 ) / 407043

= 637 / 639

= 637

Step2:

LCM(1, 175) = 175

GCD(1, 175) = ( 1 x 175 ) / 175

= 1 / 175

= 1

Step3:

LCM(1, 420) = 420

GCD(1, 420) = ( 1 x 420 ) / 420

= 1 / 420

= 1

So, Greatest Common Divisor of 637, 639, 175, 420 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 689, 552, 675, 155
• GCD of 253, 986, 232, 773
• GCD of 535, 479, 900, 130
• GCD of 410, 701, 221, 240
• GCD of 745, 716, 427, 390

Given numbers are 637, 639, 175, 420
The greatest common divisor of numbers 637, 639, 175, 420 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 637, 639, 175, 420 is 1.

1. What is the GCD of 637, 639, 175, 420?

GCD of given numbers 637, 639, 175, 420 is 1

2. How to calculate the greatest common divisor of 637, 639, 175, 420?

We can find the highest common divisor of 637, 639, 175, 420 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 637, 639, 175, 420 i.e 1.

3. How can I use the GCD of 637, 639, 175, 420Calculator?

Out the numbers 637, 639, 175, 420 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.