The **Least Common Multiple (LCM)** of two numbers is the smallest number that both numbers divide evenly into. Let’s calculate the **LCM of 3 and 5** using a simple method.

### Step 1: Prime Factorization

First, we find the prime factorization of both numbers.

**Prime factorization of 3**: 3 is a prime number, so its factorization is just 3.**Prime factorization of 5**: 5 is also a prime number, so its factorization is just 5.

### Step 2: Multiply the Prime Factors

Since both 3 and 5 are prime, the LCM is simply the product of the two numbers:

**LCM(3,5)=3×5=15**

### Conclusion

The **LCM of 3 and 5** is **15**. This means 15 is the smallest number that both 3 and 5 divide evenly into. The LCM is particularly useful when working with fractions, ratios, or solving problems where finding a common multiple is necessary.

Keep this quick method in mind for solving other LCM problems with prime numbers.

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