LCM of 123, 168, 370, 979, 680
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 123, 168, 370, 979, 680 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 123, 168, 370, 979, 680. So, keep reading to learn more.
Given numbers are 123,168,370,979,680
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 123,168,370,979,680 is 21207842040.
Find LCM of 123,168,370,979,680 with Prime Factorization
| 2 | 123, 168, 370, 979, 680 |
| 2 | 123, 84, 185, 979, 340 |
| 2 | 123, 42, 185, 979, 170 |
| 3 | 123, 21, 185, 979, 85 |
| 5 | 41, 7, 185, 979, 85 |
| 41, 7, 37, 979, 17 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 2 x 3 x 5 x 41 x 7 x 37 x 979 x 17 = 21207842040
Therefore, the lowest common multiple of 123,168,370,979,680 is 21207842040.
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.
123 x 168 x 370 x 979 x 680 = 5089882089600
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.
123 : 1, 3, 41, 123
168 : 1, 2, 3, 4, 6, 7, 8, 12, 14, 21, 24, 28, 42, 56, 84, 168
370 : 1, 2, 5, 10, 37, 74, 185, 370
979 : 1, 11, 89, 979
680 : 1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 123,168,370,979,680, is 1.
Now, the common factors can be found like this.
123:3x 41
168:2x 2x 2x 3x 7
370:2x 5x 37
979:11x 89
680:2x 2x 2x 5x 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 2x 3x 5 = 240
Therefore, the value for common factors is 240.
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 = 5089882089600/(1x240)
LCM = 5089882089600/240
LCM = 21207842040
Thus, we can understand that the LCM of 123,168,370,979,680 is 21207842040.
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FAQs on LCM of 123, 168, 370, 979, 680
1. What is the LCM of 123, 168, 370, 979, 680?
Answer: LCM of 123, 168, 370, 979, 680 is 21207842040.
2. How to calculate the LCM of 123, 168, 370, 979, 680?
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 123, 168, 370, 979, 680.
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}.