LCM of 291, 494, 570, 642
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 291, 494, 570, 642 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 291, 494, 570, 642. So, keep reading to learn more.
Given numbers are 291,494,570,642
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 291,494,570,642 is 76908390.
Find LCM of 291,494,570,642 with Prime Factorization
| 2 | 291, 494, 570, 642 |
| 3 | 291, 247, 285, 321 |
| 19 | 97, 247, 95, 107 |
| 97, 13, 5, 107 |
Multiply the prime numbers at the bottom and the left side.
2 x 3 x 19 x 97 x 13 x 5 x 107 = 76908390
Therefore, the lowest common multiple of 291,494,570,642 is 76908390.
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.
291 x 494 x 570 x 642 = 52605338760
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.
291 : 1, 3, 97, 291
494 : 1, 2, 13, 19, 26, 38, 247, 494
570 : 1, 2, 3, 5, 6, 10, 15, 19, 30, 38, 57, 95, 114, 190, 285, 570
642 : 1, 2, 3, 6, 107, 214, 321, 642
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 291,494,570,642, is 1.
Now, the common factors can be found like this.
291:3x 97
494:2x 13x 19
570:2x 3x 5x 19
642:2x 3x 107
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 3x 3x 19 = 684
Therefore, the value for common factors is 684.
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 = 52605338760/(1x684)
LCM = 52605338760/684
LCM = 76908390
Thus, we can understand that the LCM of 291,494,570,642 is 76908390.
LCM of two or more Numbers Calculation Examples
Here are some samples of LCM of two or more Numbers calculations.
FAQs on LCM of 291, 494, 570, 642
1. What is the LCM of 291, 494, 570, 642?
Answer: LCM of 291, 494, 570, 642 is 76908390.
2. How to calculate the LCM of 291, 494, 570, 642?
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 291, 494, 570, 642.
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}.