Online GCD Calculator is useful to find the GCD of 153, 420, 321, 221 quickly. Get the easiest ways to solve the greatest common divisor of 153, 420, 321, 221 i.e 1 in different methods as follows.
Given Input numbers are 153, 420, 321, 221
In the factoring method, we have to find the divisors of all numbers
Divisors of 153 :
The positive integer divisors of 153 that completely divides 153 are.
1, 3, 9, 17, 51, 153
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
Divisors of 321 :
The positive integer divisors of 321 that completely divides 321 are.
1, 3, 107, 321
Divisors of 221 :
The positive integer divisors of 221 that completely divides 221 are.
1, 13, 17, 221
GCD of numbers is the greatest common divisor
So, the GCD (153, 420, 321, 221) = 1.
Given numbers are 153, 420, 321, 221
The list of prime factors of all numbers are
Prime factors of 153 are 3 x 3 x 17
Prime factors of 420 are 2 x 2 x 3 x 5 x 7
Prime factors of 321 are 3 x 107
Prime factors of 221 are 13 x 17
The above numbers do not have any common prime factor. So GCD is 1
Given numbers are 153, 420, 321, 221
GCD of 2 numbers formula is GCD(a, b) = ( a x b) / LCM(a, b)
Apply this formula for all numbers.
Step1:
LCM(153, 420) = 21420
GCD(153, 420) = ( 153 x 420 ) / 21420
= 153 / 420
= 153
Step2:
LCM(3, 321) = 321
GCD(3, 321) = ( 3 x 321 ) / 321
= 3 / 321
= 3
Step3:
LCM(3, 221) = 663
GCD(3, 221) = ( 3 x 221 ) / 663
= 3 / 221
= 3
So, Greatest Common Divisor of 153, 420, 321, 221 is 1
Here are some samples of GCD of Numbers calculations.
Given numbers are 153, 420, 321, 221
The greatest common divisor of numbers 153, 420, 321, 221 can be found in various methods such as the LCM formula, factoring, and prime factorization. The GCD of numbers 153, 420, 321, 221 is 1.
1. What is the GCD of 153, 420, 321, 221?
GCD of given numbers 153, 420, 321, 221 is 1
2. How to calculate the greatest common divisor of 153, 420, 321, 221?
We can find the highest common divisor of 153, 420, 321, 221 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 153, 420, 321, 221 i.e 1.
3. How can I use the GCD of 153, 420, 321, 221Calculator?
Out the numbers 153, 420, 321, 221 into the GCD calculator and hit the calculate button to get the greatest common divisor as result.