LCM of 315, 921, 990, 421
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 315, 921, 990, 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 315, 921, 990, 421. So, keep reading to learn more.
Given numbers are 315,921,990,421
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 315,921,990,421 is 895681710.
Find LCM of 315,921,990,421 with Prime Factorization
| 3 | 315, 921, 990, 421 |
| 3 | 105, 307, 330, 421 |
| 5 | 35, 307, 110, 421 |
| 7, 307, 22, 421 |
Multiply the prime numbers at the bottom and the left side.
3 x 3 x 5 x 7 x 307 x 22 x 421 = 895681710
Therefore, the lowest common multiple of 315,921,990,421 is 895681710.
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.
315 x 921 x 990 x 421 = 120917030850
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.
315 : 1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 315
921 : 1, 3, 307, 921
990 : 1, 2, 3, 5, 6, 9, 10, 11, 15, 18, 22, 30, 33, 45, 55, 66, 90, 99, 110, 165, 198, 330, 495, 990
421 : 1, 421
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 315,921,990,421, is 1.
Now, the common factors can be found like this.
315:3x 3x 5x 7
921:3x 307
990:2x 3x 3x 5x 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 3x 3x 5 = 135
Therefore, the value for common factors is 135.
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 = 120917030850/(1x135)
LCM = 120917030850/135
LCM = 895681710
Thus, we can understand that the LCM of 315,921,990,421 is 895681710.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 315, 921, 990, 421
1. What is the LCM of 315, 921, 990, 421?
Answer: LCM of 315, 921, 990, 421 is 895681710.
2. How to calculate the LCM of 315, 921, 990, 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 315, 921, 990, 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}.