LCM of 578, 638, 972, 392
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 578, 638, 972, 392 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 578, 638, 972, 392. So, keep reading to learn more.
Given numbers are 578,638,972,392
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 578,638,972,392 is 8781745896.
Find LCM of 578,638,972,392 with Prime Factorization
| 2 | 578, 638, 972, 392 |
| 2 | 289, 319, 486, 196 |
| 289, 319, 243, 98 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 289 x 319 x 243 x 98 = 8781745896
Therefore, the lowest common multiple of 578,638,972,392 is 8781745896.
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.
578 x 638 x 972 x 392 = 140507934336
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.
578 : 1, 2, 17, 34, 289, 578
638 : 1, 2, 11, 22, 29, 58, 319, 638
972 : 1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 81, 108, 162, 243, 324, 486, 972
392 : 1, 2, 4, 7, 8, 14, 28, 49, 56, 98, 196, 392
2 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 578,638,972,392, is 2.
Now, the common factors can be found like this.
578:2x 17x 17
638:2x 11x 29
972:2x 2x 3x 3x 3x 3x 3
392:2x 2x 2x 7x 7
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
2x 2x 2 = 8
Therefore, the value for common factors is 8.
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 = 140507934336/(2x8)
LCM = 140507934336/16
LCM = 8781745896
Thus, we can understand that the LCM of 578,638,972,392 is 8781745896.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 578, 638, 972, 392
1. What is the LCM of 578, 638, 972, 392?
Answer: LCM of 578, 638, 972, 392 is 8781745896.
2. How to calculate the LCM of 578, 638, 972, 392?
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 578, 638, 972, 392.
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}.