LCM of 240, 780, 956, 398
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 240, 780, 956, 398 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 240, 780, 956, 398. So, keep reading to learn more.
Given numbers are 240,780,956,398
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 240,780,956,398 is 148390320.
Find LCM of 240,780,956,398 with Prime Factorization
| 2 | 240, 780, 956, 398 |
| 2 | 120, 390, 478, 199 |
| 3 | 60, 195, 239, 199 |
| 5 | 20, 65, 239, 199 |
| 4, 13, 239, 199 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 3 x 5 x 4 x 13 x 239 x 199 = 148390320
Therefore, the lowest common multiple of 240,780,956,398 is 148390320.
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.
240 x 780 x 956 x 398 = 71227353600
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.
240 : 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240
780 : 1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 260, 390, 780
956 : 1, 2, 4, 239, 478, 956
398 : 1, 2, 199, 398
2 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 240,780,956,398, is 2.
Now, the common factors can be found like this.
240:2x 2x 2x 2x 3x 5
780:2x 2x 3x 5x 13
956:2x 2x 239
398:2x 199
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 = 71227353600/(2x240)
LCM = 71227353600/480
LCM = 148390320
Thus, we can understand that the LCM of 240,780,956,398 is 148390320.
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FAQs on LCM of 240, 780, 956, 398
1. What is the LCM of 240, 780, 956, 398?
Answer: LCM of 240, 780, 956, 398 is 148390320.
2. How to calculate the LCM of 240, 780, 956, 398?
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 240, 780, 956, 398.
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}.