LCM of 645, 649, 715, 684
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 645, 649, 715, 684 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 645, 649, 715, 684. So, keep reading to learn more.
Given numbers are 645,649,715,684
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 645,649,715,684 is 1240745220.
Find LCM of 645,649,715,684 with Prime Factorization
| 3 | 645, 649, 715, 684 |
| 5 | 215, 649, 715, 228 |
| 11 | 43, 649, 143, 228 |
| 43, 59, 13, 228 |
Multiply the prime numbers at the bottom and the left side.
3 x 5 x 11 x 43 x 59 x 13 x 228 = 1240745220
Therefore, the lowest common multiple of 645,649,715,684 is 1240745220.
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.
645 x 649 x 715 x 684 = 204722961300
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.
645 : 1, 3, 5, 15, 43, 129, 215, 645
649 : 1, 11, 59, 649
715 : 1, 5, 11, 13, 55, 65, 143, 715
684 : 1, 2, 3, 4, 6, 9, 12, 18, 19, 36, 38, 57, 76, 114, 171, 228, 342, 684
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 645,649,715,684, is 1.
Now, the common factors can be found like this.
645:3x 5x 43
649:11x 59
715:5x 11x 13
684:2x 2x 3x 3x 19
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
3x 5x 11 = 165
Therefore, the value for common factors is 165.
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 = 204722961300/(1x165)
LCM = 204722961300/165
LCM = 1240745220
Thus, we can understand that the LCM of 645,649,715,684 is 1240745220.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 645, 649, 715, 684
1. What is the LCM of 645, 649, 715, 684?
Answer: LCM of 645, 649, 715, 684 is 1240745220.
2. How to calculate the LCM of 645, 649, 715, 684?
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 645, 649, 715, 684.
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}.