LCM of 355, 640, 680, 238
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 355, 640, 680, 238 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 355, 640, 680, 238. So, keep reading to learn more.
Given numbers are 355,640,680,238
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 355,640,680,238 is 5407360.
Find LCM of 355,640,680,238 with Prime Factorization
| 2 | 355, 640, 680, 238 |
| 2 | 355, 320, 340, 119 |
| 2 | 355, 160, 170, 119 |
| 5 | 355, 80, 85, 119 |
| 17 | 71, 16, 17, 119 |
| 71, 16, 1, 7 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 2 x 5 x 17 x 71 x 16 x 1 x 7 = 5407360
Therefore, the lowest common multiple of 355,640,680,238 is 5407360.
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.
355 x 640 x 680 x 238 = 36770048000
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.
355 : 1, 5, 71, 355
640 : 1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640
680 : 1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680
238 : 1, 2, 7, 14, 17, 34, 119, 238
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 355,640,680,238, is 1.
Now, the common factors can be found like this.
355:5x 71
640:2x 2x 2x 2x 2x 2x 2x 5
680:2x 2x 2x 5x 17
238:2x 7x 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 5x 5x 17 = 6800
Therefore, the value for common factors is 6800.
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 = 36770048000/(1x6800)
LCM = 36770048000/6800
LCM = 5407360
Thus, we can understand that the LCM of 355,640,680,238 is 5407360.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 355, 640, 680, 238
1. What is the LCM of 355, 640, 680, 238?
Answer: LCM of 355, 640, 680, 238 is 5407360.
2. How to calculate the LCM of 355, 640, 680, 238?
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 355, 640, 680, 238.
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}.