LCM of 402, 646, 742, 623, 642
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 402, 646, 742, 623, 642 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 402, 646, 742, 623, 642. So, keep reading to learn more.
Given numbers are 402,646,742,623,642
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 402,646,742,623,642 is 458750202918.
Find LCM of 402,646,742,623,642 with Prime Factorization
| 2 | 402, 646, 742, 623, 642 |
| 3 | 201, 323, 371, 623, 321 |
| 7 | 67, 323, 371, 623, 107 |
| 67, 323, 53, 89, 107 |
Multiply the prime numbers at the bottom and the left side.
2 x 3 x 7 x 67 x 323 x 53 x 89 x 107 = 458750202918
Therefore, the lowest common multiple of 402,646,742,623,642 is 458750202918.
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.
402 x 646 x 742 x 623 x 642 = 77070034090224
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.
402 : 1, 2, 3, 6, 67, 134, 201, 402
646 : 1, 2, 17, 19, 34, 38, 323, 646
742 : 1, 2, 7, 14, 53, 106, 371, 742
623 : 1, 7, 89, 623
642 : 1, 2, 3, 6, 107, 214, 321, 642
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 402,646,742,623,642, is 1.
Now, the common factors can be found like this.
402:2x 3x 67
646:2x 17x 19
742:2x 7x 53
623:7x 89
642:2x 3x 107
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 7 = 168
Therefore, the value for common factors is 168.
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 = 77070034090224/(1x168)
LCM = 77070034090224/168
LCM = 458750202918
Thus, we can understand that the LCM of 402,646,742,623,642 is 458750202918.
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FAQs on LCM of 402, 646, 742, 623, 642
1. What is the LCM of 402, 646, 742, 623, 642?
Answer: LCM of 402, 646, 742, 623, 642 is 458750202918.
2. How to calculate the LCM of 402, 646, 742, 623, 642?
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 402, 646, 742, 623, 642.
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}.