Sample inputs

m: 25
n: 10

m: 620
n: 8

m: 3
n: 4

How to Find LCM

There are three popular ways in which you can find the LCM of given two numbers.

• Division Method
• Listing Multiples
• Prime Factorization

Steps for finding LCM using Prime Factors

The following is a step-by-step approach to find the LCM (Least Common Multiple) of a given two numbers using Prime Factors.

1. Find the Prime Factors: Identify the prime factors of each number m and n.
2. List the Prime Factors: List the prime factors of both numbers.
3. Identify Common Prime Factors: Identify all the common prime factors and their highest powers from both lists.
4. Multiply the Common Prime Factors: Multiply the common prime factors, each raised to its highest power.
5. Multiply Remaining Prime Factors: If any prime factors remain from either number, multiply them together.
6. Multiply the Results: Multiply the results from steps 4 and 5 together to get the LCM.

Commonly Sought LCMs

• LCM of 2 and 2
• LCM of 2 and 3
• LCM of 2 and 4
• LCM of 2 and 5
• LCM of 2 and 6
• LCM of 2 and 7
• LCM of 2 and 8
• LCM of 2 and 9
• LCM of 2 and 10
• LCM of 2 and 12
• LCM of 2 and 15
• LCM of 2 and 16
• LCM of 2 and 18
• LCM of 2 and 20
• LCM of 2 and 21
• LCM of 2 and 25
• LCM of 2 and 30
• LCM of 2 and 40
• LCM of 2 and 50
• LCM of 2 and 60
• LCM of 2 and 70
• LCM of 2 and 80
• LCM of 2 and 90
• LCM of 2 and 100
• LCM of 3 and 3
• LCM of 3 and 4
• LCM of 3 and 5
• LCM of 3 and 6
• LCM of 3 and 7
• LCM of 3 and 8
• LCM of 3 and 9
• LCM of 3 and 10
• LCM of 3 and 12
• LCM of 3 and 15
• LCM of 3 and 16
• LCM of 3 and 18
• LCM of 3 and 20
• LCM of 3 and 21
• LCM of 3 and 25
• LCM of 3 and 30
• LCM of 3 and 40
• LCM of 3 and 50
• LCM of 3 and 60
• LCM of 3 and 70
• LCM of 3 and 80
• LCM of 3 and 90
• LCM of 3 and 100
• LCM of 4 and 4
• LCM of 4 and 5
• LCM of 4 and 6
• LCM of 4 and 7
• LCM of 4 and 8
• LCM of 4 and 9
• LCM of 4 and 10
• LCM of 4 and 12
• LCM of 4 and 15
• LCM of 4 and 16
• LCM of 4 and 18
• LCM of 4 and 20
• LCM of 4 and 21
• LCM of 4 and 25
• LCM of 4 and 30
• LCM of 4 and 40
• LCM of 4 and 50
• LCM of 4 and 60
• LCM of 4 and 70
• LCM of 4 and 80
• LCM of 4 and 90
• LCM of 4 and 100
• LCM of 5 and 5
• LCM of 5 and 6
• LCM of 5 and 7
• LCM of 5 and 8
• LCM of 5 and 9
• LCM of 5 and 10
• LCM of 5 and 12
• LCM of 5 and 15
• LCM of 5 and 16
• LCM of 5 and 18
• LCM of 5 and 20
• LCM of 5 and 21
• LCM of 5 and 25
• LCM of 5 and 30
• LCM of 5 and 40
• LCM of 5 and 50
• LCM of 5 and 60
• LCM of 5 and 70
• LCM of 5 and 80
• LCM of 5 and 90
• LCM of 5 and 100
• LCM of 6 and 6
• LCM of 6 and 7
• LCM of 6 and 8
• LCM of 6 and 9
• LCM of 6 and 10
• LCM of 6 and 12
• LCM of 6 and 15
• LCM of 6 and 16
• LCM of 6 and 18
• LCM of 6 and 20
• LCM of 6 and 21
• LCM of 6 and 25
• LCM of 6 and 30
• LCM of 6 and 40
• LCM of 6 and 50
• LCM of 6 and 60
• LCM of 6 and 70
• LCM of 6 and 80
• LCM of 6 and 90
• LCM of 6 and 100
• LCM of 7 and 7
• LCM of 7 and 8
• LCM of 7 and 9
• LCM of 7 and 10
• LCM of 7 and 12
• LCM of 7 and 15
• LCM of 7 and 16
• LCM of 7 and 18
• LCM of 7 and 20
• LCM of 7 and 21
• LCM of 7 and 25
• LCM of 7 and 30
• LCM of 7 and 40
• LCM of 7 and 50
• LCM of 7 and 60
• LCM of 7 and 70
• LCM of 7 and 80
• LCM of 7 and 90
• LCM of 7 and 100
• LCM of 8 and 8
• LCM of 8 and 9
• LCM of 8 and 10
• LCM of 8 and 12
• LCM of 8 and 15
• LCM of 8 and 16
• LCM of 8 and 18
• LCM of 8 and 20
• LCM of 8 and 21
• LCM of 8 and 25
• LCM of 8 and 30
• LCM of 8 and 40
• LCM of 8 and 50
• LCM of 8 and 60
• LCM of 8 and 70
• LCM of 8 and 80
• LCM of 8 and 90
• LCM of 8 and 100
• LCM of 9 and 9
• LCM of 9 and 10
• LCM of 9 and 12
• LCM of 9 and 15
• LCM of 9 and 16
• LCM of 9 and 18
• LCM of 9 and 20
• LCM of 9 and 21
• LCM of 9 and 25
• LCM of 9 and 30
• LCM of 9 and 40
• LCM of 9 and 50
• LCM of 9 and 60
• LCM of 9 and 70
• LCM of 9 and 80
• LCM of 9 and 90
• LCM of 9 and 100
• LCM of 10 and 10
• LCM of 10 and 12
• LCM of 10 and 15
• LCM of 10 and 16
• LCM of 10 and 18
• LCM of 10 and 20
• LCM of 10 and 21
• LCM of 10 and 25
• LCM of 10 and 30
• LCM of 10 and 40
• LCM of 10 and 50
• LCM of 10 and 60
• LCM of 10 and 70
• LCM of 10 and 80
• LCM of 10 and 90
• LCM of 10 and 100
• LCM of 12 and 12
• LCM of 12 and 15
• LCM of 12 and 16
• LCM of 12 and 18
• LCM of 12 and 20
• LCM of 12 and 21
• LCM of 12 and 25
• LCM of 12 and 30
• LCM of 12 and 40
• LCM of 12 and 50
• LCM of 12 and 60
• LCM of 12 and 70
• LCM of 12 and 80
• LCM of 12 and 90
• LCM of 12 and 100
• LCM of 15 and 15
• LCM of 15 and 16
• LCM of 15 and 18
• LCM of 15 and 20
• LCM of 15 and 21
• LCM of 15 and 25
• LCM of 15 and 30
• LCM of 15 and 40
• LCM of 15 and 50
• LCM of 15 and 60
• LCM of 15 and 70
• LCM of 15 and 80
• LCM of 15 and 90
• LCM of 15 and 100
• LCM of 16 and 16
• LCM of 16 and 18
• LCM of 16 and 20
• LCM of 16 and 21
• LCM of 16 and 25
• LCM of 16 and 30
• LCM of 16 and 40
• LCM of 16 and 50
• LCM of 16 and 60
• LCM of 16 and 70
• LCM of 16 and 80
• LCM of 16 and 90
• LCM of 16 and 100
• LCM of 18 and 18
• LCM of 18 and 20
• LCM of 18 and 21
• LCM of 18 and 25
• LCM of 18 and 30
• LCM of 18 and 40
• LCM of 18 and 50
• LCM of 18 and 60
• LCM of 18 and 70
• LCM of 18 and 80
• LCM of 18 and 90
• LCM of 18 and 100
• LCM of 20 and 20
• LCM of 20 and 21
• LCM of 20 and 25
• LCM of 20 and 30
• LCM of 20 and 40
• LCM of 20 and 50
• LCM of 20 and 60
• LCM of 20 and 70
• LCM of 20 and 80
• LCM of 20 and 90
• LCM of 20 and 100
• LCM of 21 and 21
• LCM of 21 and 25
• LCM of 21 and 30
• LCM of 21 and 40
• LCM of 21 and 50
• LCM of 21 and 60
• LCM of 21 and 70
• LCM of 21 and 80
• LCM of 21 and 90
• LCM of 21 and 100
• LCM of 25 and 25
• LCM of 25 and 30
• LCM of 25 and 40
• LCM of 25 and 50
• LCM of 25 and 60
• LCM of 25 and 70
• LCM of 25 and 80
• LCM of 25 and 90
• LCM of 25 and 100
• LCM of 30 and 30
• LCM of 30 and 40
• LCM of 30 and 50
• LCM of 30 and 60
• LCM of 30 and 70
• LCM of 30 and 80
• LCM of 30 and 90
• LCM of 30 and 100
• LCM of 40 and 40
• LCM of 40 and 50
• LCM of 40 and 60
• LCM of 40 and 70
• LCM of 40 and 80
• LCM of 40 and 90
• LCM of 40 and 100
• LCM of 50 and 50
• LCM of 50 and 60
• LCM of 50 and 70
• LCM of 50 and 80
• LCM of 50 and 90
• LCM of 50 and 100
• LCM of 60 and 60
• LCM of 60 and 70
• LCM of 60 and 80
• LCM of 60 and 90
• LCM of 60 and 100
• LCM of 70 and 70
• LCM of 70 and 80
• LCM of 70 and 90
• LCM of 70 and 100
• LCM of 80 and 80
• LCM of 80 and 90
• LCM of 80 and 100
• LCM of 90 and 90
• LCM of 90 and 100
• LCM of 100 and 100