LCM of 403, 220, 420, 955
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 403, 220, 420, 955 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 403, 220, 420, 955. So, keep reading to learn more.
Given numbers are 403,220,420,955
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 403,220,420,955 is 355615260.
Find LCM of 403,220,420,955 with Prime Factorization
| 2 | 403, 220, 420, 955 |
| 2 | 403, 110, 210, 955 |
| 5 | 403, 55, 105, 955 |
| 403, 11, 21, 191 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 5 x 403 x 11 x 21 x 191 = 355615260
Therefore, the lowest common multiple of 403,220,420,955 is 355615260.
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.
403 x 220 x 420 x 955 = 35561526000
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.
403 : 1, 13, 31, 403
220 : 1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220
420 : 1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420
955 : 1, 5, 191, 955
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 403,220,420,955, is 1.
Now, the common factors can be found like this.
403:13x 31
220:2x 2x 5x 11
420:2x 2x 3x 5x 7
955:5x 191
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 5x 5 = 100
Therefore, the value for common factors is 100.
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 = 35561526000/(1x100)
LCM = 35561526000/100
LCM = 355615260
Thus, we can understand that the LCM of 403,220,420,955 is 355615260.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 403, 220, 420, 955
1. What is the LCM of 403, 220, 420, 955?
Answer: LCM of 403, 220, 420, 955 is 355615260.
2. How to calculate the LCM of 403, 220, 420, 955?
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 403, 220, 420, 955.
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}.