LCM of 921, 611, 978, 428
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 921, 611, 978, 428 with the LCM of Two or More Numbers Calculator. Here we are teaching you two different methods through which you can calculate the LCM of 921, 611, 978, 428. So, keep reading to learn more.
Given numbers are 921,611,978,428
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 921,611,978,428 is 39258365484.
Find LCM of 921,611,978,428 with Prime Factorization
| 2 | 921, 611, 978, 428 |
| 3 | 921, 611, 489, 214 |
| 307, 611, 163, 214 |
Multiply the prime numbers at the bottom and the left side.
2 x 3 x 307 x 611 x 163 x 214 = 39258365484
Therefore, the lowest common multiple of 921,611,978,428 is 39258365484.
LCM formula is LCM(a1, a2, an) = (a1 x a2 x an)/{GCF(a1 x a2 x an) x common factors}
Firstly, we have to find the product of all the numbers.
921 x 611 x 978 x 428 = 235550192904
Then, let us find the GCF of these five numbers. To do so, we have to list down the factors for each number and choose the highest factor that is in all of the lists.
921 : 1, 3, 307, 921
611 : 1, 13, 47, 611
978 : 1, 2, 3, 6, 163, 326, 489, 978
428 : 1, 2, 4, 107, 214, 428
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 921,611,978,428, is 1.
Now, the common factors can be found like this.
921:3x 307
611:13x 47
978:2x 3x 163
428:2x 2x 107
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
2x 3 = 6
Therefore, the value for common factors is 6.
Now that we have all the elements of the formula, we can plug them in to calculate the LCM.
LCM(a1, a2, an) = (a1 x a2 x an)/{GCF(a1 x a2 x an) x common factors}
LCM = 235550192904/(1x6)
LCM = 235550192904/6
LCM = 39258365484
Thus, we can understand that the LCM of 921,611,978,428 is 39258365484.
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FAQs on LCM of 921, 611, 978, 428
1. What is the LCM of 921, 611, 978, 428?
Answer: LCM of 921, 611, 978, 428 is 39258365484.
2. How to calculate the LCM of 921, 611, 978, 428?
The LCM can be found using two methods. You can either use the LCM formula or the prime factorization method to calculate the LCM of 921, 611, 978, 428.
3. What is the LCM formula?
The LCM formula is LCM(a1, a2, an) = (a1 x a2 x an)/{GCF(a1 x a2 x an) x common factors}.