Least Common Multiple of 13 and 19

Least common multiple or lowest common denominator (LCD) can be calculated in three ways;

• Least Common Multiple of 13 and 19 by Prime method
• Least Common Multiple of 13 and 19 with GCF Formula

Least common multiple can be found by multiplying the highest exponent prime factors of 13 and 19. First we will calculate the prime factors of 13 and 19.

Prime Factorization of 13

Prime factors of 13 are 13. Prime factorization of 13 in exponential form is:

13 = 13¹

Prime Factorization of 19

Prime factors of 19 are 19. Prime factorization of 19 in exponential form is:

19 = 19¹

Now multiplying the highest exponent prime factors to calculate the LCM of 13 and 19.

LCM(13,19) = 13¹×19¹
LCM(13,19) = 247

Factors of 13

List of positive integer factors of 13 that divides 13 without a remainder.

1, 13

Factors of 19

List of positive integer factors of 19 that divides 19 without a remainder.

1, 19

The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 13 and 19, than apply into the LCM equation.

GCF(13,19) = 1
LCM(13,19) = ( 13 × 19) / 1
LCM(13,19) = 247 / 1
LCM(13,19) = 247

(i) The LCM of 19 and 13 is associative

LCM of 13 and 19 = LCM of 19 and 13

1. What is the LCM of 13 and 19?

Answer: LCM of 13 and 19 is 247.

2. What are the Factors of 13?

Answer: Factors of 13 are 1, 13. There are 2 integers that are factors of 13. The greatest factor of 13 is 13.

3. What are the Factors of 19?

Answer: Factors of 19 are 1, 19. There are 2 integers that are factors of 19. The greatest factor of 19 is 19.

4. How to Find the LCM of 13 and 19?

Answer:

Least Common Multiple of 13 and 19 = 247

Step 1: Find the prime factorization of 13

13 = 13

Step 2: Find the prime factorization of 19

19 = 19

Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:

LCM = 247 = 13 x 19

Step 4: Therefore, the least common multiple of 13 and 19 is 247.