LCM of 391, 987, 917, 153
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 391, 987, 917, 153 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 391, 987, 917, 153. So, keep reading to learn more.
Given numbers are 391,987,917,153
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 391,987,917,153 is 151665381.
Find LCM of 391,987,917,153 with Prime Factorization
| 3 | 391, 987, 917, 153 |
| 7 | 391, 329, 917, 51 |
| 17 | 391, 47, 131, 51 |
| 23, 47, 131, 3 |
Multiply the prime numbers at the bottom and the left side.
3 x 7 x 17 x 23 x 47 x 131 x 3 = 151665381
Therefore, the lowest common multiple of 391,987,917,153 is 151665381.
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.
391 x 987 x 917 x 153 = 54144541017
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.
391 : 1, 17, 23, 391
987 : 1, 3, 7, 21, 47, 141, 329, 987
917 : 1, 7, 131, 917
153 : 1, 3, 9, 17, 51, 153
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 391,987,917,153, is 1.
Now, the common factors can be found like this.
391:17x 23
987:3x 7x 47
917:7x 131
153:3x 3x 17
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 17 = 357
Therefore, the value for common factors is 357.
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 = 54144541017/(1x357)
LCM = 54144541017/357
LCM = 151665381
Thus, we can understand that the LCM of 391,987,917,153 is 151665381.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 391, 987, 917, 153
1. What is the LCM of 391, 987, 917, 153?
Answer: LCM of 391, 987, 917, 153 is 151665381.
2. How to calculate the LCM of 391, 987, 917, 153?
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 391, 987, 917, 153.
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}.