LCM of 661, 869, 803, 390, 288
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 661, 869, 803, 390, 288 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 661, 869, 803, 390, 288. So, keep reading to learn more.
Given numbers are 661,869,803,390,288
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 661,869,803,390,288 is 784964363040.
Find LCM of 661,869,803,390,288 with Prime Factorization
| 2 | 661, 869, 803, 390, 288 |
| 3 | 661, 869, 803, 195, 144 |
| 11 | 661, 869, 803, 65, 48 |
| 661, 79, 73, 65, 48 |
Multiply the prime numbers at the bottom and the left side.
2 x 3 x 11 x 661 x 79 x 73 x 65 x 48 = 784964363040
Therefore, the lowest common multiple of 661,869,803,390,288 is 784964363040.
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.
661 x 869 x 803 x 390 x 288 = 51807647960640
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.
661 : 1, 661
869 : 1, 11, 79, 869
803 : 1, 11, 73, 803
390 : 1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390
288 : 1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 32, 36, 48, 72, 96, 144, 288
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 661,869,803,390,288, is 1.
Now, the common factors can be found like this.
661:661
869:11x 79
803:11x 73
390:2x 3x 5x 13
288:2x 2x 2x 2x 2x 3x 3
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
2x 3x 11 = 66
Therefore, the value for common factors is 66.
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 = 51807647960640/(1x66)
LCM = 51807647960640/66
LCM = 784964363040
Thus, we can understand that the LCM of 661,869,803,390,288 is 784964363040.
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FAQs on LCM of 661, 869, 803, 390, 288
1. What is the LCM of 661, 869, 803, 390, 288?
Answer: LCM of 661, 869, 803, 390, 288 is 784964363040.
2. How to calculate the LCM of 661, 869, 803, 390, 288?
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 661, 869, 803, 390, 288.
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}.