LCM of 281, 669, 643, 784, 972
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 281, 669, 643, 784, 972 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 281, 669, 643, 784, 972. So, keep reading to learn more.
Given numbers are 281,669,643,784,972
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 281,669,643,784,972 is 7676168372208.
Find LCM of 281,669,643,784,972 with Prime Factorization
| 2 | 281, 669, 643, 784, 972 |
| 2 | 281, 669, 643, 392, 486 |
| 3 | 281, 669, 643, 196, 243 |
| 281, 223, 643, 196, 81 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 3 x 281 x 223 x 643 x 196 x 81 = 7676168372208
Therefore, the lowest common multiple of 281,669,643,784,972 is 7676168372208.
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.
281 x 669 x 643 x 784 x 972 = 92114020466496
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.
281 : 1, 281
669 : 1, 3, 223, 669
643 : 1, 643
784 : 1, 2, 4, 7, 8, 14, 16, 28, 49, 56, 98, 112, 196, 392, 784
972 : 1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 81, 108, 162, 243, 324, 486, 972
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 281,669,643,784,972, is 1.
Now, the common factors can be found like this.
281:281
669:3x 223
643:643
784:2x 2x 2x 2x 7x 7
972:2x 2x 3x 3x 3x 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 2x 3 = 12
Therefore, the value for common factors is 12.
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 = 92114020466496/(1x12)
LCM = 92114020466496/12
LCM = 7676168372208
Thus, we can understand that the LCM of 281,669,643,784,972 is 7676168372208.
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FAQs on LCM of 281, 669, 643, 784, 972
1. What is the LCM of 281, 669, 643, 784, 972?
Answer: LCM of 281, 669, 643, 784, 972 is 7676168372208.
2. How to calculate the LCM of 281, 669, 643, 784, 972?
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 281, 669, 643, 784, 972.
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}.