Given numbers are 691,912,420,390,207

The least common multiple of numbers can be find using the prime factorization method or LCM formula.

The LCM of 691,912,420,390,207 is 19784877840.

Find LCM of 691,912,420,390,207 with Prime Factorization

Multiply the prime numbers at the bottom and the left side.

2 x 2 x 3 x 5 x 691 x 76 x 7 x 13 x 69 = 19784877840

Therefore, the lowest common multiple of 691,912,420,390,207 is 19784877840.

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.

691 x 912 x 420 x 390 x 207 = 21367668067200

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.

691 : 1, 691

912 : 1, 2, 3, 4, 6, 8, 12, 16, 19, 24, 38, 48, 57, 76, 114, 152, 228, 304, 456, 912

420 : 1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420

390 : 1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390

207 : 1, 3, 9, 23, 69, 207

1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 691,912,420,390,207, is 1.

Now, the common factors can be found like this.

691:691

912:2x 2x 2x 2x 3x 19

420:2x 2x 3x 5x 7

390:2x 3x 5x 13

207:3x 3x 23

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 3x 3x 3x 5 = 1080

Therefore, the value for common factors is 1080.

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 = 21367668067200/(1x1080)

LCM = 21367668067200/1080

LCM = 19784877840

Thus, we can understand that the LCM of 691,912,420,390,207 is 19784877840.

Here are some samples of LCM of two or more Numbers calculations.

• LCM of 507, 907, 153, 856, 994
• LCM of 626, 459, 243, 522, 821
• LCM of 418, 601, 477, 557, 774
• LCM of 156, 718, 686, 899, 940
• LCM of 826, 890, 206, 751, 229

1. What is the LCM of 691, 912, 420, 390, 207?

Answer: LCM of 691, 912, 420, 390, 207 is 19784877840.

2. How to calculate the LCM of 691, 912, 420, 390, 207?

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 691, 912, 420, 390, 207.

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}.