LCM of 780, 304, 813, 688
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 780, 304, 813, 688 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 780, 304, 813, 688. So, keep reading to learn more.
Given numbers are 780,304,813,688
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 780,304,813,688 is 690789840.
Find LCM of 780,304,813,688 with Prime Factorization
| 2 | 780, 304, 813, 688 |
| 2 | 390, 152, 813, 344 |
| 2 | 195, 76, 813, 172 |
| 2 | 195, 38, 813, 86 |
| 3 | 195, 19, 813, 43 |
| 65, 19, 271, 43 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 2 x 2 x 3 x 65 x 19 x 271 x 43 = 690789840
Therefore, the lowest common multiple of 780,304,813,688 is 690789840.
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.
780 x 304 x 813 x 688 = 132631649280
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.
780 : 1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780
304 : 1, 2, 4, 8, 16, 19, 38, 76, 152, 304
813 : 1, 3, 271, 813
688 : 1, 2, 4, 8, 16, 43, 86, 172, 344, 688
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 780,304,813,688, is 1.
Now, the common factors can be found like this.
780:2x 2x 3x 5x 13
304:2x 2x 2x 2x 19
813:3x 271
688:2x 2x 2x 2x 43
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 2x 2x 2x 2x 3 = 192
Therefore, the value for common factors is 192.
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 = 132631649280/(1x192)
LCM = 132631649280/192
LCM = 690789840
Thus, we can understand that the LCM of 780,304,813,688 is 690789840.
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FAQs on LCM of 780, 304, 813, 688
1. What is the LCM of 780, 304, 813, 688?
Answer: LCM of 780, 304, 813, 688 is 690789840.
2. How to calculate the LCM of 780, 304, 813, 688?
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 780, 304, 813, 688.
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}.