LCM of 403, 749, 124, 840
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 403, 749, 124, 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 403, 749, 124, 840. So, keep reading to learn more.
Given numbers are 403,749,124,840
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 403,749,124,840 is 36221640.
Find LCM of 403,749,124,840 with Prime Factorization
| 2 | 403, 749, 124, 840 |
| 2 | 403, 749, 62, 420 |
| 7 | 403, 749, 31, 210 |
| 31 | 403, 107, 31, 30 |
| 13, 107, 1, 30 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 7 x 31 x 13 x 107 x 1 x 30 = 36221640
Therefore, the lowest common multiple of 403,749,124,840 is 36221640.
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.
403 x 749 x 124 x 840 = 31440383520
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.
403 : 1, 13, 31, 403
749 : 1, 7, 107, 749
124 : 1, 2, 4, 31, 62, 124
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 403,749,124,840, is 1.
Now, the common factors can be found like this.
403:13x 31
749:7x 107
124:2x 2x 31
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 2x 7x 31 = 868
Therefore, the value for common factors is 868.
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 = 31440383520/(1x868)
LCM = 31440383520/868
LCM = 36221640
Thus, we can understand that the LCM of 403,749,124,840 is 36221640.
LCM of two or more Numbers Calculation Examples
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FAQs on LCM of 403, 749, 124, 840
1. What is the LCM of 403, 749, 124, 840?
Answer: LCM of 403, 749, 124, 840 is 36221640.
2. How to calculate the LCM of 403, 749, 124, 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 403, 749, 124, 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}.