LCM of 781, 840, 785, 651, 859
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 781, 840, 785, 651, 859 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 781, 840, 785, 651, 859. So, keep reading to learn more.
Given numbers are 781,840,785,651,859
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 781,840,785,651,859 is 2742741198120.
Find LCM of 781,840,785,651,859 with Prime Factorization
| 3 | 781, 840, 785, 651, 859 |
| 5 | 781, 280, 785, 217, 859 |
| 7 | 781, 56, 157, 217, 859 |
| 781, 8, 157, 31, 859 |
Multiply the prime numbers at the bottom and the left side.
3 x 5 x 7 x 781 x 8 x 157 x 31 x 859 = 2742741198120
Therefore, the lowest common multiple of 781,840,785,651,859 is 2742741198120.
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.
781 x 840 x 785 x 651 x 859 = 287987825802600
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.
781 : 1, 11, 71, 781
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
785 : 1, 5, 157, 785
651 : 1, 3, 7, 21, 31, 93, 217, 651
859 : 1, 859
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 781,840,785,651,859, is 1.
Now, the common factors can be found like this.
781:11x 71
840:2x 2x 2x 3x 5x 7
785:5x 157
651:3x 7x 31
859:859
From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.
3x 5x 7 = 105
Therefore, the value for common factors is 105.
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 = 287987825802600/(1x105)
LCM = 287987825802600/105
LCM = 2742741198120
Thus, we can understand that the LCM of 781,840,785,651,859 is 2742741198120.
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FAQs on LCM of 781, 840, 785, 651, 859
1. What is the LCM of 781, 840, 785, 651, 859?
Answer: LCM of 781, 840, 785, 651, 859 is 2742741198120.
2. How to calculate the LCM of 781, 840, 785, 651, 859?
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 781, 840, 785, 651, 859.
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}.