LCM of 984, 643, 684, 420
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 984, 643, 684, 420 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 984, 643, 684, 420. So, keep reading to learn more.
Given numbers are 984,643,684,420
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 984,643,684,420 is 1262260440.
Find LCM of 984,643,684,420 with Prime Factorization
| 2 | 984, 643, 684, 420 |
| 2 | 492, 643, 342, 210 |
| 3 | 246, 643, 171, 105 |
| 82, 643, 57, 35 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 3 x 82 x 643 x 57 x 35 = 1262260440
Therefore, the lowest common multiple of 984,643,684,420 is 1262260440.
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.
984 x 643 x 684 x 420 = 181765503360
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.
984 : 1, 2, 3, 4, 6, 8, 12, 24, 41, 82, 123, 164, 246, 328, 492, 984
643 : 1, 643
684 : 1, 2, 3, 4, 6, 9, 12, 18, 19, 36, 38, 57, 76, 114, 171, 228, 342, 684
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
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 984,643,684,420, is 1.
Now, the common factors can be found like this.
984:2x 2x 2x 3x 41
643:643
684:2x 2x 3x 3x 19
420:2x 2x 3x 5x 7
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 3 = 144
Therefore, the value for common factors is 144.
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 = 181765503360/(1x144)
LCM = 181765503360/144
LCM = 1262260440
Thus, we can understand that the LCM of 984,643,684,420 is 1262260440.
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FAQs on LCM of 984, 643, 684, 420
1. What is the LCM of 984, 643, 684, 420?
Answer: LCM of 984, 643, 684, 420 is 1262260440.
2. How to calculate the LCM of 984, 643, 684, 420?
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 984, 643, 684, 420.
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}.