Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 615 and 616 the smallest integer that is 378840 that is divisible by both numbers.
Least Common Multiple (LCM) of 615 and 616 is 378840.
LCM(615,616) = 378840
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 615 and 616. First we will calculate the prime factors of 615 and 616.
Prime Factorization of 615
3 | 615 |
5 | 205 |
41 | 41 |
1 |
Prime factors of 615 are 3, 5,41. Prime factorization of 615 in exponential form is:
615 = 31×51×411
Prime Factorization of 616
2 | 616 |
2 | 308 |
2 | 154 |
7 | 77 |
11 | 11 |
1 |
Prime factors of 616 are 2, 7,11. Prime factorization of 616 in exponential form is:
616 = 23×71×111
Now multiplying the highest exponent prime factors to calculate the LCM of 615 and 616.
LCM(615,616) = 23×31×51×71×111×411
LCM(615,616) = 378840
Factors of 615
List of positive integer factors of 615 that divides 615 without a remainder.
1, 3, 5, 15, 41, 123, 205, 615
Factors of 616
List of positive integer factors of 616 that divides 616 without a remainder.
1, 2, 4, 7, 8, 11, 14, 22, 28, 44, 56, 77, 88, 154, 308, 616
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 615 and 616, than apply into the LCM equation.
GCF(615,616) = 1
LCM(615,616) = ( 615 × 616) / 1
LCM(615,616) = 378840 / 1
LCM(615,616) = 378840
(i) The LCM of 616 and 615 is associative
LCM of 615 and 616 = LCM of 616 and 615
1. What is the LCM of 615 and 616?
Answer: LCM of 615 and 616 is 378840.
2. What are the Factors of 615?
Answer: Factors of 615 are 1, 3, 5, 15, 41, 123, 205, 615. There are 8 integers that are factors of 615. The greatest factor of 615 is 615.
3. What are the Factors of 616?
Answer: Factors of 616 are 1, 2, 4, 7, 8, 11, 14, 22, 28, 44, 56, 77, 88, 154, 308, 616. There are 16 integers that are factors of 616. The greatest factor of 616 is 616.
4. How to Find the LCM of 615 and 616?
Answer:
Least Common Multiple of 615 and 616 = 378840
Step 1: Find the prime factorization of 615
615 = 3 x 5 x 41
Step 2: Find the prime factorization of 616
616 = 2 x 2 x 2 x 7 x 11
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 378840 = 2 x 2 x 2 x 3 x 5 x 7 x 11 x 41
Step 4: Therefore, the least common multiple of 615 and 616 is 378840.