Find the LCM of 771, 847, 978, 799, 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 771, 847, 978, 799, 840. So, keep reading to learn more.
Given numbers are 771,847,978,799,840
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 771,847,978,799,840 is 3401983190760.
Find LCM of 771,847,978,799,840 with Prime Factorization
2 | 771, 847, 978, 799, 840 |
3 | 771, 847, 489, 799, 420 |
7 | 257, 847, 163, 799, 140 |
257, 121, 163, 799, 20 |
Multiply the prime numbers at the bottom and the left side.
2 x 3 x 7 x 257 x 121 x 163 x 799 x 20 = 3401983190760
Therefore, the lowest common multiple of 771,847,978,799,840 is 3401983190760.
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.
771 x 847 x 978 x 799 x 840 = 428649882035760
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.
771 : 1, 3, 257, 771
847 : 1, 7, 11, 77, 121, 847
978 : 1, 2, 3, 6, 163, 326, 489, 978
799 : 1, 17, 47, 799
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 771,847,978,799,840, is 1.
Now, the common factors can be found like this.
771:3x 257
847:7x 11x 11
978:2x 3x 163
799:17x 47
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 7 = 126
Therefore, the value for common factors is 126.
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 = 428649882035760/(1x126)
LCM = 428649882035760/126
LCM = 3401983190760
Thus, we can understand that the LCM of 771,847,978,799,840 is 3401983190760.
Here are some samples of LCM of two or more Numbers calculations.
1. What is the LCM of 771, 847, 978, 799, 840?
Answer: LCM of 771, 847, 978, 799, 840 is 3401983190760.
2. How to calculate the LCM of 771, 847, 978, 799, 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 771, 847, 978, 799, 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}.