Last updated on May 26th, 2025
The LCM, meaning least common factor of 9 and 13 is the lowest number that is divisible by both 9 and 13. It is the least number that 9 and 13 can divide evenly. LCM is widely used in a variety of fields such as coordination in traffic lights.
The LCM of 9 and 13 is 117. This is the smallest multiple obtained by 9 and 13. We can find the LCM of 9 and 13 in various methods.
Steps to follow in the listing method:
To find the divisors of two numbers.
3 × 3 is the Factor of 9
Factors of 13 equals to 13 as it is a prime number.
Take the greater powers of all the factors and multiply each other to find the LCM:
LCM= 3 × 3 × 13 =9 × 13 =117
Therefore, LCM of 9 and 13 is 117.
Steps to follow in the prime factorization:
To find the Divisors of 2 numbers.
Factors of 9=3 × 3
Factors of 13=13 (since it is a prime number).
Look for the greater powers from all factors to find the LCM
LCM= 3 × 3 × 13 =9 × 13 =117
Therefore, LCM of 9 and 13 is 117.
Steps to follow in the division method:
Writing the common prime factors of 2 numbers.
Prime divisor of 9=3 × 3
Prime divisor of 13=13 (since it is a prime number).
Continue dividing the numbers:
LCM= 3 × 3 × 13 =9 × 13 =117
Therefore, LCM of 9 and 13 is 117.
While learning about LCM of 9 and 13, students may likely make mistakes, to avoid them a few mistakes with solutions are given below:
What is the LCM of 9 and 13?
Step 1: Find the prime factors of each number:
9=3×3
13 is a prime number, so its only factor is 13.
Step 2: Multiply the highest powers of all prime factors:
The prime factors are 3 and 13.
LCM = 32×13=9×13=117.
The LCM of 9 and 13 is 117. We took the highest powers of the prime factors present in both numbers.
What is the LCM of 9,13 and 27?
Step 1: Find the prime factors of each number:
9=3×3=32
13 is a prime number: 13
27=3×3×3=33
Step 2: Take the highest power of each prime factor:
For 3, the highest power is 33.
For 13, the highest power is 131.
Step 3: Calculate the LCM:
LCM=33×13=27×13=351
The LCM of 9, 13, and 27 is 351. We used the highest powers of the prime factors, 3 and, 13.
What is the LCM of 13 and 26?
Step 1: Find the prime factors of each number:
13 is a prime number, so its factor is 131.
26=2×13
Step 2: The highest power of each prime factor:
For 2, the highest power is 21.
For 13, the highest power is 131.
Step 3: Calculate the LCM:
LCM=2×13=26
The LCM of 13 and 26 is 26. Since 26 is already a multiple of 13, the LCM is 26.
Hiralee Lalitkumar Makwana has almost two years of teaching experience. She is a number ninja as she loves numbers. Her interest in numbers can be seen in the way she cracks math puzzles and hidden patterns.
: She loves to read number jokes and games.