Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 1608 and 1615 the smallest integer that is 2596920 that is divisible by both numbers.
Least Common Multiple (LCM) of 1608 and 1615 is 2596920.
LCM(1608,1615) = 2596920
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 1608 and 1615. First we will calculate the prime factors of 1608 and 1615.
Prime Factorization of 1608
2 | 1608 |
2 | 804 |
2 | 402 |
3 | 201 |
67 | 67 |
1 |
Prime factors of 1608 are 2, 3,67. Prime factorization of 1608 in exponential form is:
1608 = 23×31×671
Prime Factorization of 1615
5 | 1615 |
17 | 323 |
19 | 19 |
1 |
Prime factors of 1615 are 5, 17,19. Prime factorization of 1615 in exponential form is:
1615 = 51×171×191
Now multiplying the highest exponent prime factors to calculate the LCM of 1608 and 1615.
LCM(1608,1615) = 23×31×51×171×191×671
LCM(1608,1615) = 2596920
Factors of 1608
List of positive integer factors of 1608 that divides 1608 without a remainder.
1, 2, 3, 4, 6, 8, 12, 24, 67, 134, 201, 268, 402, 536, 804, 1608
Factors of 1615
List of positive integer factors of 1615 that divides 1615 without a remainder.
1, 5, 17, 19, 85, 95, 323, 1615
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 1608 and 1615, than apply into the LCM equation.
GCF(1608,1615) = 1
LCM(1608,1615) = ( 1608 × 1615) / 1
LCM(1608,1615) = 2596920 / 1
LCM(1608,1615) = 2596920
(i) The LCM of 1615 and 1608 is associative
LCM of 1608 and 1615 = LCM of 1615 and 1608
1. What is the LCM of 1608 and 1615?
Answer: LCM of 1608 and 1615 is 2596920.
2. What are the Factors of 1608?
Answer: Factors of 1608 are 1, 2, 3, 4, 6, 8, 12, 24, 67, 134, 201, 268, 402, 536, 804, 1608. There are 16 integers that are factors of 1608. The greatest factor of 1608 is 1608.
3. What are the Factors of 1615?
Answer: Factors of 1615 are 1, 5, 17, 19, 85, 95, 323, 1615. There are 8 integers that are factors of 1615. The greatest factor of 1615 is 1615.
4. How to Find the LCM of 1608 and 1615?
Answer:
Least Common Multiple of 1608 and 1615 = 2596920
Step 1: Find the prime factorization of 1608
1608 = 2 x 2 x 2 x 3 x 67
Step 2: Find the prime factorization of 1615
1615 = 5 x 17 x 19
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 2596920 = 2 x 2 x 2 x 3 x 5 x 17 x 19 x 67
Step 4: Therefore, the least common multiple of 1608 and 1615 is 2596920.