LCM of 816, 636, 741, 690
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 816, 636, 741, 690 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 816, 636, 741, 690. So, keep reading to learn more.
Given numbers are 816,636,741,690
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 816,636,741,690 is 1228459440.
Find LCM of 816,636,741,690 with Prime Factorization
| 2 | 816, 636, 741, 690 |
| 2 | 408, 318, 741, 345 |
| 3 | 204, 159, 741, 345 |
| 68, 53, 247, 115 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 3 x 68 x 53 x 247 x 115 = 1228459440
Therefore, the lowest common multiple of 816,636,741,690 is 1228459440.
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.
816 x 636 x 741 x 690 = 265347239040
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.
816 : 1, 2, 3, 4, 6, 8, 12, 16, 17, 24, 34, 48, 51, 68, 102, 136, 204, 272, 408, 816
636 : 1, 2, 3, 4, 6, 12, 53, 106, 159, 212, 318, 636
741 : 1, 3, 13, 19, 39, 57, 247, 741
690 : 1, 2, 3, 5, 6, 10, 15, 23, 30, 46, 69, 115, 138, 230, 345, 690
3 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 816,636,741,690, is 3.
Now, the common factors can be found like this.
816:2x 2x 2x 2x 3x 17
636:2x 2x 3x 53
741:3x 13x 19
690:2x 3x 5x 23
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 3x 3 = 72
Therefore, the value for common factors is 72.
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 = 265347239040/(3x72)
LCM = 265347239040/216
LCM = 1228459440
Thus, we can understand that the LCM of 816,636,741,690 is 1228459440.
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FAQs on LCM of 816, 636, 741, 690
1. What is the LCM of 816, 636, 741, 690?
Answer: LCM of 816, 636, 741, 690 is 1228459440.
2. How to calculate the LCM of 816, 636, 741, 690?
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 816, 636, 741, 690.
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}.