Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 1516 and 1521 the smallest integer that is 2305836 that is divisible by both numbers.
Least Common Multiple (LCM) of 1516 and 1521 is 2305836.
LCM(1516,1521) = 2305836
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 1516 and 1521. First we will calculate the prime factors of 1516 and 1521.
Prime Factorization of 1516
2 | 1516 |
2 | 758 |
379 | 379 |
1 |
Prime factors of 1516 are 2,379. Prime factorization of 1516 in exponential form is:
1516 = 22×3791
Prime Factorization of 1521
3 | 1521 |
3 | 507 |
13 | 169 |
13 | 13 |
1 |
Prime factors of 1521 are 3,13. Prime factorization of 1521 in exponential form is:
1521 = 32×132
Now multiplying the highest exponent prime factors to calculate the LCM of 1516 and 1521.
LCM(1516,1521) = 22×32×132×3791
LCM(1516,1521) = 2305836
Factors of 1516
List of positive integer factors of 1516 that divides 1516 without a remainder.
1, 2, 4, 379, 758, 1516
Factors of 1521
List of positive integer factors of 1521 that divides 1521 without a remainder.
1, 3, 9, 13, 39, 117, 169, 507, 1521
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 1516 and 1521, than apply into the LCM equation.
GCF(1516,1521) = 1
LCM(1516,1521) = ( 1516 × 1521) / 1
LCM(1516,1521) = 2305836 / 1
LCM(1516,1521) = 2305836
(i) The LCM of 1521 and 1516 is associative
LCM of 1516 and 1521 = LCM of 1521 and 1516
1. What is the LCM of 1516 and 1521?
Answer: LCM of 1516 and 1521 is 2305836.
2. What are the Factors of 1516?
Answer: Factors of 1516 are 1, 2, 4, 379, 758, 1516. There are 6 integers that are factors of 1516. The greatest factor of 1516 is 1516.
3. What are the Factors of 1521?
Answer: Factors of 1521 are 1, 3, 9, 13, 39, 117, 169, 507, 1521. There are 9 integers that are factors of 1521. The greatest factor of 1521 is 1521.
4. How to Find the LCM of 1516 and 1521?
Answer:
Least Common Multiple of 1516 and 1521 = 2305836
Step 1: Find the prime factorization of 1516
1516 = 2 x 2 x 379
Step 2: Find the prime factorization of 1521
1521 = 3 x 3 x 13 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 = 2305836 = 2 x 2 x 3 x 3 x 13 x 13 x 379
Step 4: Therefore, the least common multiple of 1516 and 1521 is 2305836.