LCM of 974, 840, 222, 420, 980
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 974, 840, 222, 420, 980 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 974, 840, 222, 420, 980. So, keep reading to learn more.
Given numbers are 974,840,222,420,980
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 974,840,222,420,980 is 105951720.
Find LCM of 974,840,222,420,980 with Prime Factorization
| 2 | 974, 840, 222, 420, 980 |
| 2 | 487, 420, 111, 210, 490 |
| 3 | 487, 105, 111, 210, 245 |
| 5 | 487, 35, 37, 70, 245 |
| 7 | 487, 7, 37, 14, 49 |
| 487, 1, 37, 2, 7 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 3 x 5 x 7 x 487 x 1 x 37 x 2 x 7 = 105951720
Therefore, the lowest common multiple of 974,840,222,420,980 is 105951720.
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.
974 x 840 x 222 x 420 x 980 = 74759533632000
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.
974 : 1, 2, 487, 974
840 : 1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 840
222 : 1, 2, 3, 6, 37, 74, 111, 222
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
980 : 1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980
2 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 974,840,222,420,980, is 2.
Now, the common factors can be found like this.
974:2x 487
840:2x 2x 2x 3x 5x 7
222:2x 3x 37
420:2x 2x 3x 5x 7
980:2x 2x 5x 7x 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 2x 3x 3x 5x 5x 7x 7 = 352800
Therefore, the value for common factors is 352800.
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 = 74759533632000/(2x352800)
LCM = 74759533632000/705600
LCM = 105951720
Thus, we can understand that the LCM of 974,840,222,420,980 is 105951720.
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FAQs on LCM of 974, 840, 222, 420, 980
1. What is the LCM of 974, 840, 222, 420, 980?
Answer: LCM of 974, 840, 222, 420, 980 is 105951720.
2. How to calculate the LCM of 974, 840, 222, 420, 980?
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 974, 840, 222, 420, 980.
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}.