LCM of 978, 641, 542, 638
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 978, 641, 542, 638 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 978, 641, 542, 638. So, keep reading to learn more.
Given numbers are 978,641,542,638
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 978,641,542,638 is 54194705202.
Find LCM of 978,641,542,638 with Prime Factorization
| 2 | 978, 641, 542, 638 |
| 489, 641, 271, 319 |
Multiply the prime numbers at the bottom and the left side.
2 x 489 x 641 x 271 x 319 = 54194705202
Therefore, the lowest common multiple of 978,641,542,638 is 54194705202.
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.
978 x 641 x 542 x 638 = 216778820808
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.
978 : 1, 2, 3, 6, 163, 326, 489, 978
641 : 1, 641
542 : 1, 2, 271, 542
638 : 1, 2, 11, 22, 29, 58, 319, 638
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 978,641,542,638, is 1.
Now, the common factors can be found like this.
978:2x 3x 163
641:641
542:2x 271
638:2x 11x 29
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
2x 2 = 4
Therefore, the value for common factors is 4.
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 = 216778820808/(1x4)
LCM = 216778820808/4
LCM = 54194705202
Thus, we can understand that the LCM of 978,641,542,638 is 54194705202.
LCM of two or more Numbers Calculation Examples
Here are some samples of LCM of two or more Numbers calculations.
FAQs on LCM of 978, 641, 542, 638
1. What is the LCM of 978, 641, 542, 638?
Answer: LCM of 978, 641, 542, 638 is 54194705202.
2. How to calculate the LCM of 978, 641, 542, 638?
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 978, 641, 542, 638.
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}.