LCM of 205, 501, 690, 840
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 205, 501, 690, 840 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 205, 501, 690, 840. So, keep reading to learn more.
Given numbers are 205,501,690,840
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 205,501,690,840 is 132284040.
Find LCM of 205,501,690,840 with Prime Factorization
| 2 | 205, 501, 690, 840 |
| 3 | 205, 501, 345, 420 |
| 5 | 205, 167, 115, 140 |
| 41, 167, 23, 28 |
Multiply the prime numbers at the bottom and the left side.
2 x 3 x 5 x 41 x 167 x 23 x 28 = 132284040
Therefore, the lowest common multiple of 205,501,690,840 is 132284040.
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.
205 x 501 x 690 x 840 = 59527818000
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.
205 : 1, 5, 41, 205
501 : 1, 3, 167, 501
690 : 1, 2, 3, 5, 6, 10, 15, 23, 30, 46, 69, 115, 138, 230, 345, 690
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
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 205,501,690,840, is 1.
Now, the common factors can be found like this.
205:5x 41
501:3x 167
690:2x 3x 5x 23
840:2x 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 3x 3x 5x 5 = 450
Therefore, the value for common factors is 450.
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 = 59527818000/(1x450)
LCM = 59527818000/450
LCM = 132284040
Thus, we can understand that the LCM of 205,501,690,840 is 132284040.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 205, 501, 690, 840
1. What is the LCM of 205, 501, 690, 840?
Answer: LCM of 205, 501, 690, 840 is 132284040.
2. How to calculate the LCM of 205, 501, 690, 840?
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 205, 501, 690, 840.
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}.