LCM of 870, 441, 642, 890
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 870, 441, 642, 890 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 870, 441, 642, 890. So, keep reading to learn more.
Given numbers are 870,441,642,890
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 870,441,642,890 is 1217896470.
Find LCM of 870,441,642,890 with Prime Factorization
| 2 | 870, 441, 642, 890 |
| 3 | 435, 441, 321, 445 |
| 5 | 145, 147, 107, 445 |
| 29, 147, 107, 89 |
Multiply the prime numbers at the bottom and the left side.
2 x 3 x 5 x 29 x 147 x 107 x 89 = 1217896470
Therefore, the lowest common multiple of 870,441,642,890 is 1217896470.
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.
870 x 441 x 642 x 890 = 219221364600
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.
870 : 1, 2, 3, 5, 6, 10, 15, 29, 30, 58, 87, 145, 174, 290, 435, 870
441 : 1, 3, 7, 9, 21, 49, 63, 147, 441
642 : 1, 2, 3, 6, 107, 214, 321, 642
890 : 1, 2, 5, 10, 89, 178, 445, 890
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 870,441,642,890, is 1.
Now, the common factors can be found like this.
870:2x 3x 5x 29
441:3x 3x 7x 7
642:2x 3x 107
890:2x 5x 89
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 5 = 180
Therefore, the value for common factors is 180.
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 = 219221364600/(1x180)
LCM = 219221364600/180
LCM = 1217896470
Thus, we can understand that the LCM of 870,441,642,890 is 1217896470.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 870, 441, 642, 890
1. What is the LCM of 870, 441, 642, 890?
Answer: LCM of 870, 441, 642, 890 is 1217896470.
2. How to calculate the LCM of 870, 441, 642, 890?
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 870, 441, 642, 890.
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}.