LCM of 772, 390, 221, 408
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 772, 390, 221, 408 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 772, 390, 221, 408. So, keep reading to learn more.
Given numbers are 772,390,221,408
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 772,390,221,408 is 5118360.
Find LCM of 772,390,221,408 with Prime Factorization
| 2 | 772, 390, 221, 408 |
| 2 | 386, 195, 221, 204 |
| 3 | 193, 195, 221, 102 |
| 13 | 193, 65, 221, 34 |
| 17 | 193, 5, 17, 34 |
| 193, 5, 1, 2 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 3 x 13 x 17 x 193 x 5 x 1 x 2 = 5118360
Therefore, the lowest common multiple of 772,390,221,408 is 5118360.
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.
772 x 390 x 221 x 408 = 27147781440
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.
772 : 1, 2, 4, 193, 386, 772
390 : 1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390
221 : 1, 13, 17, 221
408 : 1, 2, 3, 4, 6, 8, 12, 17, 24, 34, 51, 68, 102, 136, 204, 408
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 772,390,221,408, is 1.
Now, the common factors can be found like this.
772:2x 2x 193
390:2x 3x 5x 13
221:13x 17
408:2x 2x 2x 3x 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 3x 13x 17 = 5304
Therefore, the value for common factors is 5304.
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 = 27147781440/(1x5304)
LCM = 27147781440/5304
LCM = 5118360
Thus, we can understand that the LCM of 772,390,221,408 is 5118360.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 772, 390, 221, 408
1. What is the LCM of 772, 390, 221, 408?
Answer: LCM of 772, 390, 221, 408 is 5118360.
2. How to calculate the LCM of 772, 390, 221, 408?
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 772, 390, 221, 408.
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}.