LCM for 40 and 64

What's the Least Common Multiple (LCM) of 40 and 64?

Answer: LCM of 40 and 64 is 320

(Three hundred twenty)

Finding LCM for 40 and 64 using GCF's of these numbers

The first method to find LCM for numbers 40 and 64 is to find Greatest Common Factor (GCF) of these numbers. Here's the formula:

LCM = (Number1 × Number2) ÷ GCF

GCF of numbers 40 and 64 is 8, so

LCM = (40 × 64) ÷ 8

LCM = 2560 ÷ 8

LCM = 320

Finding LCM for 40 and 64 by Listing Multiples

The second method to find LCM for numbers 40 and 64 is to list out the common multiples for both nubmers and pick the first which matching:

Multiples of 40: 40, 80, 120, 160, 200, 240, 280, 320, 360, 400

Multiples of 64: 64, 128, 192, 256, 320, 384, 448

So the LCM for 40 and 64 is 320

Finding LCM for 40 and 64 by Prime Factorization

Another method to find LCM for numbers 40 and 64 is to list all Prime Factors for both numbers and multiply the highest exponent prime factors:

All Prime Factors of 40: 2, 2, 2, 5 (exponent form: 23, 51)

All Prime Factors of 64: 2, 2, 2, 2, 2, 2 (exponent form: 26)

26 × 51 = 320

See Also

LCM Table

Number 1Number 2LCM
25641600
2664832
2764
2864
29641856
3064960
31641984
3264
33642112
34641088
35642240
3664576
37642368
38641216
39642496
4064
41642624
42641344
43642752
4464704
45642880
46641472
47643008
4864
49643136
50641600
51643264
5264832
53643392
54641728

About "Least Common Multiple" Calculator

This calculator will help you find the Least Common Multiple (LCM) of two numbers. For example, it can help you find out what's the Least Common Multiple (LCM) of 40 and 64? (The answer is: 320). Select the first number (e.g. '40') and the second number (e.g. '64'). After that hit the 'Calculate' button.
Least Common Multiple (LCM) also known as the Lowest Common Multiple or Smallest Common Multiple of 2 numbers - it is the smallest positive integer that is divisible by both numbers

FAQ

What's the Least Common Multiple (LCM) of 40 and 64?

LCM of 40 and 64 is 320