LCM of 858, 308, 620, 221
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 858, 308, 620, 221 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 858, 308, 620, 221. So, keep reading to learn more.
Given numbers are 858,308,620,221
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 858,308,620,221 is 31651620.
Find LCM of 858,308,620,221 with Prime Factorization
| 2 | 858, 308, 620, 221 |
| 2 | 429, 154, 310, 221 |
| 11 | 429, 77, 155, 221 |
| 13 | 39, 7, 155, 221 |
| 3, 7, 155, 17 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 11 x 13 x 3 x 7 x 155 x 17 = 31651620
Therefore, the lowest common multiple of 858,308,620,221 is 31651620.
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.
858 x 308 x 620 x 221 = 36209453280
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.
858 : 1, 2, 3, 6, 11, 13, 22, 26, 33, 39, 66, 78, 143, 286, 429, 858
308 : 1, 2, 4, 7, 11, 14, 22, 28, 44, 77, 154, 308
620 : 1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620
221 : 1, 13, 17, 221
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 858,308,620,221, is 1.
Now, the common factors can be found like this.
858:2x 3x 11x 13
308:2x 2x 7x 11
620:2x 2x 5x 31
221:13x 17
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 11x 13 = 1144
Therefore, the value for common factors is 1144.
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 = 36209453280/(1x1144)
LCM = 36209453280/1144
LCM = 31651620
Thus, we can understand that the LCM of 858,308,620,221 is 31651620.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 858, 308, 620, 221
1. What is the LCM of 858, 308, 620, 221?
Answer: LCM of 858, 308, 620, 221 is 31651620.
2. How to calculate the LCM of 858, 308, 620, 221?
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 858, 308, 620, 221.
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}.