GCD of 661, 141, 21 Calculator

Given Input numbers are 661, 141, 21

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

Divisors of 661 :

The positive integer divisors of 661 that completely divides 661 are.

1, 661

Divisors of 141 :

The positive integer divisors of 141 that completely divides 141 are.

1, 3, 47, 141

Divisors of 21 :

The positive integer divisors of 21 that completely divides 21 are.

1, 3, 7, 21

GCD of numbers is the greatest common divisor

So, the GCD (661, 141, 21) = 1.

Given numbers are 661, 141, 21

The list of prime factors of all numbers are

Prime factors of 661 are 661

Prime factors of 141 are 3 x 47

Prime factors of 21 are 3 x 7

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

Given numbers are 661, 141, 21

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

Apply this formula for all numbers.

Step1:

LCM(661, 141) = 93201

GCD(661, 141) = ( 661 x 141 ) / 93201

= 661 / 141

= 661

Step2:

LCM(1, 21) = 21

GCD(1, 21) = ( 1 x 21 ) / 21

= 1 / 21

= 1

So, Greatest Common Divisor of 661, 141, 21 is 1

Here are some samples of GCD of Numbers calculations.

• GCD of 838, 583, 42
• GCD of 405, 771, 42
• GCD of 808, 521, 76
• GCD of 385, 879, 52
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Given numbers are 661, 141, 21
The greatest common divisor of numbers 661, 141, 21 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 661, 141, 21 is 1.

1. What is the GCD of 661, 141, 21?

GCD of given numbers 661, 141, 21 is 1

2. How to calculate the greatest common divisor of 661, 141, 21?

We can find the highest common divisor of 661, 141, 21 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 661, 141, 21 i.e 1.

3. How can I use the GCD of 661, 141, 21Calculator?

Out the numbers 661, 141, 21 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.