LCM of 393, 917, 693, 421
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 393, 917, 693, 421 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 393, 917, 693, 421. So, keep reading to learn more.
Given numbers are 393,917,693,421
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 393,917,693,421 is 38219643.
Find LCM of 393,917,693,421 with Prime Factorization
| 3 | 393, 917, 693, 421 |
| 7 | 131, 917, 231, 421 |
| 131 | 131, 131, 33, 421 |
| 1, 1, 33, 421 |
Multiply the prime numbers at the bottom and the left side.
3 x 7 x 131 x 1 x 1 x 33 x 421 = 38219643
Therefore, the lowest common multiple of 393,917,693,421 is 38219643.
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.
393 x 917 x 693 x 421 = 105142237893
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.
393 : 1, 3, 131, 393
917 : 1, 7, 131, 917
693 : 1, 3, 7, 9, 11, 21, 33, 63, 77, 99, 231, 693
421 : 1, 421
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 393,917,693,421, is 1.
Now, the common factors can be found like this.
393:3x 131
917:7x 131
693:3x 3x 7x 11
421:421
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
3x 7x 131 = 2751
Therefore, the value for common factors is 2751.
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 = 105142237893/(1x2751)
LCM = 105142237893/2751
LCM = 38219643
Thus, we can understand that the LCM of 393,917,693,421 is 38219643.
LCM of two or more Numbers Calculation Examples
Here are some samples of LCM of two or more Numbers calculations.
FAQs on LCM of 393, 917, 693, 421
1. What is the LCM of 393, 917, 693, 421?
Answer: LCM of 393, 917, 693, 421 is 38219643.
2. How to calculate the LCM of 393, 917, 693, 421?
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 393, 917, 693, 421.
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}.