Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 3115 and 3120 the smallest integer that is 1943760 that is divisible by both numbers.
Least Common Multiple (LCM) of 3115 and 3120 is 1943760.
LCM(3115,3120) = 1943760
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 3115 and 3120. First we will calculate the prime factors of 3115 and 3120.
Prime Factorization of 3115
5 | 3115 |
7 | 623 |
89 | 89 |
1 |
Prime factors of 3115 are 5, 7,89. Prime factorization of 3115 in exponential form is:
3115 = 51×71×891
Prime Factorization of 3120
2 | 3120 |
2 | 1560 |
2 | 780 |
2 | 390 |
3 | 195 |
5 | 65 |
13 | 13 |
1 |
Prime factors of 3120 are 2, 3, 5,13. Prime factorization of 3120 in exponential form is:
3120 = 24×31×51×131
Now multiplying the highest exponent prime factors to calculate the LCM of 3115 and 3120.
LCM(3115,3120) = 24×31×51×71×131×891
LCM(3115,3120) = 1943760
Factors of 3115
List of positive integer factors of 3115 that divides 3115 without a remainder.
1, 5, 7, 35, 89, 445, 623, 3115
Factors of 3120
List of positive integer factors of 3120 that divides 3120 without a remainder.
1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 39, 40, 48, 52, 60, 65, 78, 80, 104, 120, 130, 156, 195, 208, 240, 260, 312, 390, 520, 624, 780, 1040, 1560, 3120
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 3115 and 3120, than apply into the LCM equation.
GCF(3115,3120) = 5
LCM(3115,3120) = ( 3115 × 3120) / 5
LCM(3115,3120) = 9718800 / 5
LCM(3115,3120) = 1943760
(i) The LCM of 3120 and 3115 is associative
LCM of 3115 and 3120 = LCM of 3120 and 3115
1. What is the LCM of 3115 and 3120?
Answer: LCM of 3115 and 3120 is 1943760.
2. What are the Factors of 3115?
Answer: Factors of 3115 are 1, 5, 7, 35, 89, 445, 623, 3115. There are 8 integers that are factors of 3115. The greatest factor of 3115 is 3115.
3. What are the Factors of 3120?
Answer: Factors of 3120 are 1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 39, 40, 48, 52, 60, 65, 78, 80, 104, 120, 130, 156, 195, 208, 240, 260, 312, 390, 520, 624, 780, 1040, 1560, 3120. There are 40 integers that are factors of 3120. The greatest factor of 3120 is 3120.
4. How to Find the LCM of 3115 and 3120?
Answer:
Least Common Multiple of 3115 and 3120 = 1943760
Step 1: Find the prime factorization of 3115
3115 = 5 x 7 x 89
Step 2: Find the prime factorization of 3120
3120 = 2 x 2 x 2 x 2 x 3 x 5 x 13
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 1943760 = 2 x 2 x 2 x 2 x 3 x 5 x 7 x 13 x 89
Step 4: Therefore, the least common multiple of 3115 and 3120 is 1943760.