LCM of 684, 972, 740, 391
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 684, 972, 740, 391 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 684, 972, 740, 391. So, keep reading to learn more.
Given numbers are 684,972,740,391
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 684,972,740,391 is 1335882780.
Find LCM of 684,972,740,391 with Prime Factorization
| 2 | 684, 972, 740, 391 |
| 2 | 342, 486, 370, 391 |
| 3 | 171, 243, 185, 391 |
| 3 | 57, 81, 185, 391 |
| 19, 27, 185, 391 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 3 x 3 x 19 x 27 x 185 x 391 = 1335882780
Therefore, the lowest common multiple of 684,972,740,391 is 1335882780.
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.
684 x 972 x 740 x 391 = 192367120320
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.
684 : 1, 2, 3, 4, 6, 9, 12, 18, 19, 36, 38, 57, 76, 114, 171, 228, 342, 684
972 : 1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 81, 108, 162, 243, 324, 486, 972
740 : 1, 2, 4, 5, 10, 20, 37, 74, 148, 185, 370, 740
391 : 1, 17, 23, 391
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 684,972,740,391, is 1.
Now, the common factors can be found like this.
684:2x 2x 3x 3x 19
972:2x 2x 3x 3x 3x 3x 3
740:2x 2x 5x 37
391:17x 23
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 2x 3x 3 = 144
Therefore, the value for common factors is 144.
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 = 192367120320/(1x144)
LCM = 192367120320/144
LCM = 1335882780
Thus, we can understand that the LCM of 684,972,740,391 is 1335882780.
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FAQs on LCM of 684, 972, 740, 391
1. What is the LCM of 684, 972, 740, 391?
Answer: LCM of 684, 972, 740, 391 is 1335882780.
2. How to calculate the LCM of 684, 972, 740, 391?
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 684, 972, 740, 391.
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}.