Least Common Multiple  of 40 and 53 is 2120

How to find the Least Common Multiple of 40 and 53?

On this page below, we'll use the Prime Factorisation, and the List of Multiples method to find out the LCM of 40 and 53.

Follow the steps below, and let's calculate the LCM of 40 and 53.


Method 1 - Prime factorization

Step 1: Create a list of all the prime factors of the numbers 40 and 53:

Prime factors of 40

The prime factors of 40 are 2, 2, 2 and 5. Prime factorization of 40 in exponential form is:

40 = 23x51

Prime factors of 53

The prime factors of 53 are 53. Prime factorization of 53 in exponential form is:

53 = 531


Step 2: Identify the highest power of each prime number from the above boxes:

23, 51, 531


Step 3: Multiply these values together:

23x51x531=2120


Step 4: The result:

As seen on the calculation above, we have now obtained the LCM of 40 and 53.

The Least Common Multiple of 40 and 53 is 2120.


Method 2 - List of Multiples

Find and list multiples of each number until the first common multiple is found. This is the lowest common multiple.


Multiples of 40:

40, 80, 120, 160, 200, 240, 280, 320, 360, 400, 440, 480, 520, 560, 600, 640, 680, 720, 760, 800, 840, 880, 920, 960, 1000, 1040, 1080, 1120, 1160, 1200, 1240, 1280, 1320, 1360, 1400, 1440, 1480, 1520, 1560, 1600, 1640, 1680, 1720, 1760, 1800, 1840, 1880, 1920, 1960, 2000, 2040, 2080, 2120, 2160, 2200, 2240

Multiples of 53:

53, 106, 159, 212, 265, 318, 371, 424, 477, 530, 583, 636, 689, 742, 795, 848, 901, 954, 1007, 1060, 1113, 1166, 1219, 1272, 1325, 1378, 1431, 1484, 1537, 1590, 1643, 1696, 1749, 1802, 1855, 1908, 1961, 2014, 2067, 2120, 2173, 2226, 2279


Therefore,

LCM(40, 53) = 2120