Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 3 and 17 the smallest integer that is 51 that is divisible by both numbers.
Least Common Multiple (LCM) of 3 and 17 is 51.
LCM(3,17) = 51
Least common multiple or lowest common denominator (LCD) can be calculated in three ways;
Least common multiple can be found by multiplying the highest exponent prime factors of 3 and 17. First we will calculate the prime factors of 3 and 17.
Prime Factorization of 3
3 | 3 |
1 |
Prime factors of 3 are 3. Prime factorization of 3 in exponential form is:
3 = 31
Prime Factorization of 17
17 | 17 |
1 |
Prime factors of 17 are 17. Prime factorization of 17 in exponential form is:
17 = 171
Now multiplying the highest exponent prime factors to calculate the LCM of 3 and 17.
LCM(3,17) = 31×171
LCM(3,17) = 51
Factors of 3
List of positive integer factors of 3 that divides 3 without a remainder.
1, 3
Factors of 17
List of positive integer factors of 17 that divides 17 without a remainder.
1, 17
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 3 and 17, than apply into the LCM equation.
GCF(3,17) = 1
LCM(3,17) = ( 3 × 17) / 1
LCM(3,17) = 51 / 1
LCM(3,17) = 51
(i) The LCM of 17 and 3 is associative
LCM of 3 and 17 = LCM of 17 and 3
1. What is the LCM of 3 and 17?
Answer: LCM of 3 and 17 is 51.
2. What are the Factors of 3?
Answer: Factors of 3 are 1, 3. There are 2 integers that are factors of 3. The greatest factor of 3 is 3.
3. What are the Factors of 17?
Answer: Factors of 17 are 1, 17. There are 2 integers that are factors of 17. The greatest factor of 17 is 17.
4. How to Find the LCM of 3 and 17?
Answer:
Least Common Multiple of 3 and 17 = 51
Step 1: Find the prime factorization of 3
3 = 3
Step 2: Find the prime factorization of 17
17 = 17
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 51 = 3 x 17
Step 4: Therefore, the least common multiple of 3 and 17 is 51.