LCM of 815, 891, 780, 624
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 815, 891, 780, 624 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 815, 891, 780, 624. So, keep reading to learn more.
Given numbers are 815,891,780,624
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 815,891,780,624 is 151042320.
Find LCM of 815,891,780,624 with Prime Factorization
| 2 | 815, 891, 780, 624 |
| 2 | 815, 891, 390, 312 |
| 3 | 815, 891, 195, 156 |
| 5 | 815, 297, 65, 52 |
| 13 | 163, 297, 13, 52 |
| 163, 297, 1, 4 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 3 x 5 x 13 x 163 x 297 x 1 x 4 = 151042320
Therefore, the lowest common multiple of 815,891,780,624 is 151042320.
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.
815 x 891 x 780 x 624 = 353439028800
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.
815 : 1, 5, 163, 815
891 : 1, 3, 9, 11, 27, 33, 81, 99, 297, 891
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
624 : 1, 2, 3, 4, 6, 8, 12, 13, 16, 24, 26, 39, 48, 52, 78, 104, 156, 208, 312, 624
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 815,891,780,624, is 1.
Now, the common factors can be found like this.
815:5x 163
891:3x 3x 3x 3x 11
780:2x 2x 3x 5x 13
624:2x 2x 2x 2x 3x 13
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 3x 3x 5x 13 = 2340
Therefore, the value for common factors is 2340.
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 = 353439028800/(1x2340)
LCM = 353439028800/2340
LCM = 151042320
Thus, we can understand that the LCM of 815,891,780,624 is 151042320.
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FAQs on LCM of 815, 891, 780, 624
1. What is the LCM of 815, 891, 780, 624?
Answer: LCM of 815, 891, 780, 624 is 151042320.
2. How to calculate the LCM of 815, 891, 780, 624?
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 815, 891, 780, 624.
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}.