GCD of 670, 402, 78, 775 Calculator

Given Input numbers are 670, 402, 78, 775

To find the GCD of numbers using factoring list out all the divisors of each number

Divisors of 670

List of positive integer divisors of 670 that divides 670 without a remainder.

1, 2, 5, 10, 67, 134, 335, 670

Divisors of 402

List of positive integer divisors of 402 that divides 402 without a remainder.

1, 2, 3, 6, 67, 134, 201, 402

Divisors of 78

List of positive integer divisors of 78 that divides 78 without a remainder.

1, 2, 3, 6, 13, 26, 39, 78

Divisors of 775

List of positive integer divisors of 775 that divides 775 without a remainder.

1, 5, 25, 31, 155, 775

Greatest Common Divisior

We found the divisors of 670, 402, 78, 775 . The biggest common divisior number is the GCD number.
So the Greatest Common Divisior 670, 402, 78, 775 is 1.

Therefore, GCD of numbers 670, 402, 78, 775 is 1

Given Input Data is 670, 402, 78, 775

Make a list of Prime Factors of all the given numbers initially

Prime Factorization of 670 is 2 x 5 x 67

Prime Factorization of 402 is 2 x 3 x 67

Prime Factorization of 78 is 2 x 3 x 13

Prime Factorization of 775 is 5 x 5 x 31

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

Step1:

Let's calculate the GCD of first two numbers

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

LCM(670, 402) = 2010

GCD(670, 402) = ( 670 x 402 ) / 2010

GCD(670, 402) = 269340 / 2010

GCD(670, 402) = 134

Step2:

Here we consider the GCD from the above i.e. 134 as first number and the next as 78

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

LCM(134, 78) = 5226

GCD(134, 78) = ( 134 x 78 ) / 5226

GCD(134, 78) = 10452 / 5226

GCD(134, 78) = 2

Step3:

Here we consider the GCD from the above i.e. 2 as first number and the next as 775

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

LCM(2, 775) = 1550

GCD(2, 775) = ( 2 x 775 ) / 1550

GCD(2, 775) = 1550 / 1550

GCD(2, 775) = 1

GCD of 670, 402, 78, 775 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 925, 682, 69, 277
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• GCD of 268, 227, 39, 600
• GCD of 901, 815, 89, 998
• GCD of 915, 207, 46, 331

1. What is the GCD of 670, 402, 78, 775?

GCD of 670, 402, 78, 775 is 1

2. Where do I get the detailed procedure to find GCD of 670, 402, 78, 775?

You can find a detailed procedure to find GCD of 670, 402, 78, 775 on our page.

3. How to find GCD of 670, 402, 78, 775 on a calculator?

You can find the GCD of 670, 402, 78, 775 by simply giving the inputs separated by commas and click on the calculate button to avail the Greatest Common Divisor in less time.