LCM of 669, 740, 420, 603, 642
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 669, 740, 420, 603, 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 669, 740, 420, 603, 642. So, keep reading to learn more.
Given numbers are 669,740,420,603,642
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 669,740,420,603,642 is 74530787940.
Find LCM of 669,740,420,603,642 with Prime Factorization
| 2 | 669, 740, 420, 603, 642 |
| 2 | 669, 370, 210, 603, 321 |
| 3 | 669, 185, 105, 603, 321 |
| 5 | 223, 185, 35, 201, 107 |
| 223, 37, 7, 201, 107 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 3 x 5 x 223 x 37 x 7 x 201 x 107 = 74530787940
Therefore, the lowest common multiple of 669,740,420,603,642 is 74530787940.
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.
669 x 740 x 420 x 603 x 642 = 80493250975200
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.
669 : 1, 3, 223, 669
740 : 1, 2, 4, 5, 10, 20, 37, 74, 148, 185, 370, 740
420 : 1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420
603 : 1, 3, 9, 67, 201, 603
642 : 1, 2, 3, 6, 107, 214, 321, 642
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 669,740,420,603,642, is 1.
Now, the common factors can be found like this.
669:3x 223
740:2x 2x 5x 37
420:2x 2x 3x 5x 7
603:3x 3x 67
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 2x 3x 3x 3x 5 = 1080
Therefore, the value for common factors is 1080.
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 = 80493250975200/(1x1080)
LCM = 80493250975200/1080
LCM = 74530787940
Thus, we can understand that the LCM of 669,740,420,603,642 is 74530787940.
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FAQs on LCM of 669, 740, 420, 603, 642
1. What is the LCM of 669, 740, 420, 603, 642?
Answer: LCM of 669, 740, 420, 603, 642 is 74530787940.
2. How to calculate the LCM of 669, 740, 420, 603, 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 669, 740, 420, 603, 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}.