Given numbers are 643,172,545,981

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

The LCM of 643,172,545,981 is 542473380.

Find LCM of 643,172,545,981 with Prime Factorization

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

109 x 643 x 172 x 5 x 9 = 542473380

Therefore, the lowest common multiple of 643,172,545,981 is 542473380.

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.

643 x 172 x 545 x 981 = 59129598420

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.

643 : 1, 643

172 : 1, 2, 4, 43, 86, 172

545 : 1, 5, 109, 545

981 : 1, 3, 9, 109, 327, 981

1 is the greatest number that appears in all the lists. Therefore, we can determine that the GCF of 643,172,545,981, is 1.

Now, the common factors can be found like this.

643:643

172:2x 2x 43

545:5x 109

981:3x 3x 109

From this, we can see that the common factors because they appear for more than two numbers. So, just multiply them all together.

109 = 109

Therefore, the value for common factors is 109.

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 = 59129598420/(1x109)

LCM = 59129598420/109

LCM = 542473380

Thus, we can understand that the LCM of 643,172,545,981 is 542473380.

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

• LCM of 361, 467, 584, 391
• LCM of 653, 146, 549, 707
• LCM of 615, 946, 891, 382
• LCM of 690, 714, 796, 385
• LCM of 829, 518, 461, 529

1. What is the LCM of 643, 172, 545, 981?

Answer: LCM of 643, 172, 545, 981 is 542473380.

2. How to calculate the LCM of 643, 172, 545, 981?

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 643, 172, 545, 981.

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}.