Find the LCM of 646, 391, 680, 860, 744 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 646, 391, 680, 860, 744. So, keep reading to learn more.
Given numbers are 646,391,680,860,744
The least common multiple of numbers can be find using the prime factorization method or LCM formula.
The LCM of 646,391,680,860,744 is 1188342840.
Find LCM of 646,391,680,860,744 with Prime Factorization
2 | 646, 391, 680, 860, 744 |
2 | 323, 391, 340, 430, 372 |
2 | 323, 391, 170, 215, 186 |
5 | 323, 391, 85, 215, 93 |
17 | 323, 391, 17, 43, 93 |
19, 23, 1, 43, 93 |
Multiply the prime numbers at the bottom and the left side.
2 x 2 x 2 x 5 x 17 x 19 x 23 x 1 x 43 x 93 = 1188342840
Therefore, the lowest common multiple of 646,391,680,860,744 is 1188342840.
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.
646 x 391 x 680 x 860 x 744 = 109897945843200
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.
646 : 1, 2, 17, 19, 34, 38, 323, 646
391 : 1, 17, 23, 391
680 : 1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680
860 : 1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860
744 : 1, 2, 3, 4, 6, 8, 12, 24, 31, 62, 93, 124, 186, 248, 372, 744
1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 646,391,680,860,744, is 1.
Now, the common factors can be found like this.
646:2x 17x 19
391:17x 23
680:2x 2x 2x 5x 17
860:2x 2x 5x 43
744:2x 2x 2x 3x 31
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 2x 5x 17x 17 = 92480
Therefore, the value for common factors is 92480.
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 = 109897945843200/(1x92480)
LCM = 109897945843200/92480
LCM = 1188342840
Thus, we can understand that the LCM of 646,391,680,860,744 is 1188342840.
Here are some samples of LCM of two or more Numbers calculations.
1. What is the LCM of 646, 391, 680, 860, 744?
Answer: LCM of 646, 391, 680, 860, 744 is 1188342840.
2. How to calculate the LCM of 646, 391, 680, 860, 744?
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 646, 391, 680, 860, 744.
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}.