LCM of 781, 942, 280, 120, 670
Reviewed By : Rajashekhar Valipishetty
Last Updated at : Mar 29,2023
Find the LCM of 781, 942, 280, 120, 670 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, 942, 280, 120, 670. So, keep reading to learn more.
Given numbers are 781,942,280,120,670
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 781,942,280,120,670 is 6900884760.
Find LCM of 781,942,280,120,670 with Prime Factorization
| 2 | 781, 942, 280, 120, 670 |
| 2 | 781, 471, 140, 60, 335 |
| 2 | 781, 471, 70, 30, 335 |
| 3 | 781, 471, 35, 15, 335 |
| 5 | 781, 157, 35, 5, 335 |
| 781, 157, 7, 1, 67 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 2 x 3 x 5 x 781 x 157 x 7 x 1 x 67 = 6900884760
Therefore, the lowest common multiple of 781,942,280,120,670 is 6900884760.
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 942 x 280 x 120 x 670 = 16562123424000
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
942 : 1, 2, 3, 6, 157, 314, 471, 942
280 : 1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280
120 : 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120
670 : 1, 2, 5, 10, 67, 134, 335, 670
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 781,942,280,120,670, is 1.
Now, the common factors can be found like this.
781:11x 71
942:2x 3x 157
280:2x 2x 2x 5x 7
120:2x 2x 2x 3x 5
670:2x 5x 67
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 5x 5 = 2400
Therefore, the value for common factors is 2400.
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 = 16562123424000/(1x2400)
LCM = 16562123424000/2400
LCM = 6900884760
Thus, we can understand that the LCM of 781,942,280,120,670 is 6900884760.
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FAQs on LCM of 781, 942, 280, 120, 670
1. What is the LCM of 781, 942, 280, 120, 670?
Answer: LCM of 781, 942, 280, 120, 670 is 6900884760.
2. How to calculate the LCM of 781, 942, 280, 120, 670?
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, 942, 280, 120, 670.
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}.