Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 8515 and 8520 the smallest integer that is 14509560 that is divisible by both numbers.
Least Common Multiple (LCM) of 8515 and 8520 is 14509560.
LCM(8515,8520) = 14509560
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 8515 and 8520. First we will calculate the prime factors of 8515 and 8520.
Prime Factorization of 8515
5 | 8515 |
13 | 1703 |
131 | 131 |
1 |
Prime factors of 8515 are 5, 13,131. Prime factorization of 8515 in exponential form is:
8515 = 51×131×1311
Prime Factorization of 8520
2 | 8520 |
2 | 4260 |
2 | 2130 |
3 | 1065 |
5 | 355 |
71 | 71 |
1 |
Prime factors of 8520 are 2, 3, 5,71. Prime factorization of 8520 in exponential form is:
8520 = 23×31×51×711
Now multiplying the highest exponent prime factors to calculate the LCM of 8515 and 8520.
LCM(8515,8520) = 23×31×51×131×711×1311
LCM(8515,8520) = 14509560
Factors of 8515
List of positive integer factors of 8515 that divides 8515 without a remainder.
1, 5, 13, 65, 131, 655, 1703, 8515
Factors of 8520
List of positive integer factors of 8520 that divides 8520 without a remainder.
1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 71, 120, 142, 213, 284, 355, 426, 568, 710, 852, 1065, 1420, 1704, 2130, 2840, 4260, 8520
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 8515 and 8520, than apply into the LCM equation.
GCF(8515,8520) = 5
LCM(8515,8520) = ( 8515 × 8520) / 5
LCM(8515,8520) = 72547800 / 5
LCM(8515,8520) = 14509560
(i) The LCM of 8520 and 8515 is associative
LCM of 8515 and 8520 = LCM of 8520 and 8515
1. What is the LCM of 8515 and 8520?
Answer: LCM of 8515 and 8520 is 14509560.
2. What are the Factors of 8515?
Answer: Factors of 8515 are 1, 5, 13, 65, 131, 655, 1703, 8515. There are 8 integers that are factors of 8515. The greatest factor of 8515 is 8515.
3. What are the Factors of 8520?
Answer: Factors of 8520 are 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 71, 120, 142, 213, 284, 355, 426, 568, 710, 852, 1065, 1420, 1704, 2130, 2840, 4260, 8520. There are 32 integers that are factors of 8520. The greatest factor of 8520 is 8520.
4. How to Find the LCM of 8515 and 8520?
Answer:
Least Common Multiple of 8515 and 8520 = 14509560
Step 1: Find the prime factorization of 8515
8515 = 5 x 13 x 131
Step 2: Find the prime factorization of 8520
8520 = 2 x 2 x 2 x 3 x 5 x 71
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 14509560 = 2 x 2 x 2 x 3 x 5 x 13 x 71 x 131
Step 4: Therefore, the least common multiple of 8515 and 8520 is 14509560.