LCM of 626, 624, 390, 642
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 626, 624, 390, 642 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 626, 624, 390, 642. So, keep reading to learn more.
Given numbers are 626,624,390,642
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 626,624,390,642 is 104491920.
Find LCM of 626,624,390,642 with Prime Factorization
| 2 | 626, 624, 390, 642 |
| 3 | 313, 312, 195, 321 |
| 13 | 313, 104, 65, 107 |
| 313, 8, 5, 107 |
Multiply the prime numbers at the bottom and the left side.
2 x 3 x 13 x 313 x 8 x 5 x 107 = 104491920
Therefore, the lowest common multiple of 626,624,390,642 is 104491920.
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.
626 x 624 x 390 x 642 = 97804437120
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.
626 : 1, 2, 313, 626
624 : 1, 2, 3, 4, 6, 8, 12, 13, 16, 24, 26, 39, 48, 52, 78, 104, 156, 208, 312, 624
390 : 1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390
642 : 1, 2, 3, 6, 107, 214, 321, 642
2 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 626,624,390,642, is 2.
Now, the common factors can be found like this.
626:2x 313
624:2x 2x 2x 2x 3x 13
390:2x 3x 5x 13
642:2x 3x 107
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 3x 3x 13 = 468
Therefore, the value for common factors is 468.
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 = 97804437120/(2x468)
LCM = 97804437120/936
LCM = 104491920
Thus, we can understand that the LCM of 626,624,390,642 is 104491920.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 626, 624, 390, 642
1. What is the LCM of 626, 624, 390, 642?
Answer: LCM of 626, 624, 390, 642 is 104491920.
2. How to calculate the LCM of 626, 624, 390, 642?
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 626, 624, 390, 642.
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}.