LCM for 3 and 4

"Least Common Multiple" Calculator

Least Common Multiple of

and

What's the Least Common Multiple (LCM) of 3 and 4?

Answer: LCM of 3 and 4 is 12

(Twelve)

Finding LCM for 3 and 4 using GCF's of these numbers

The first method to find LCM for numbers 3 and 4 is to find Greatest Common Factor (GCF) of these numbers. Here's the formula:

LCM = (Number1 × Number2) ÷ GCF

GCF of numbers 3 and 4 is 1, so

LCM = (3 × 4) ÷ 1

LCM = 12 ÷ 1

LCM = 12

Finding LCM for 3 and 4 by Listing Multiples

The second method to find LCM for numbers 3 and 4 is to list out the common multiples for both nubmers and pick the first which matching:

Multiples of 3: 3, 6, 9, 12, 15, 18

Multiples of 4: 4, 8, 12, 16, 20

So the LCM for 3 and 4 is 12

Finding LCM for 3 and 4 by Prime Factorization

Another method to find LCM for numbers 3 and 4 is to list all Prime Factors for both numbers and multiply the highest exponent prime factors:

All Prime Factors of 3: 3 (exponent form: 31)

All Prime Factors of 4: 2, 2 (exponent form: 22)

31 × 22 = 12

Related Calculations

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 3 and 4? (The answer is: 12). Select the first number (e.g. '3') and the second number (e.g. '4'). 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

"Least Common Multiple" Calculator

Least Common Multiple of

and

LCM Table

Number 1Number 2LCM
144
244
3412
444
5420
6412
7428
848
9436
10420
11444
12412
13452
14428
15460
16416
17468
18436
19476
20420
21484
22444
23492
24424
254100
26452
274108
28428
294116
30460

FAQ

What's the Least Common Multiple (LCM) of 3 and 4?

LCM of 3 and 4 is 12

See Also