Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 1520 and 1525 the smallest integer that is 463600 that is divisible by both numbers.
Least Common Multiple (LCM) of 1520 and 1525 is 463600.
LCM(1520,1525) = 463600
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 1520 and 1525. First we will calculate the prime factors of 1520 and 1525.
Prime Factorization of 1520
2 | 1520 |
2 | 760 |
2 | 380 |
2 | 190 |
5 | 95 |
19 | 19 |
1 |
Prime factors of 1520 are 2, 5,19. Prime factorization of 1520 in exponential form is:
1520 = 24×51×191
Prime Factorization of 1525
5 | 1525 |
5 | 305 |
61 | 61 |
1 |
Prime factors of 1525 are 5,61. Prime factorization of 1525 in exponential form is:
1525 = 52×611
Now multiplying the highest exponent prime factors to calculate the LCM of 1520 and 1525.
LCM(1520,1525) = 24×52×191×611
LCM(1520,1525) = 463600
Factors of 1520
List of positive integer factors of 1520 that divides 1520 without a remainder.
1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520
Factors of 1525
List of positive integer factors of 1525 that divides 1525 without a remainder.
1, 5, 25, 61, 305, 1525
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 1520 and 1525, than apply into the LCM equation.
GCF(1520,1525) = 5
LCM(1520,1525) = ( 1520 × 1525) / 5
LCM(1520,1525) = 2318000 / 5
LCM(1520,1525) = 463600
(i) The LCM of 1525 and 1520 is associative
LCM of 1520 and 1525 = LCM of 1525 and 1520
1. What is the LCM of 1520 and 1525?
Answer: LCM of 1520 and 1525 is 463600.
2. What are the Factors of 1520?
Answer: Factors of 1520 are 1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520. There are 20 integers that are factors of 1520. The greatest factor of 1520 is 1520.
3. What are the Factors of 1525?
Answer: Factors of 1525 are 1, 5, 25, 61, 305, 1525. There are 6 integers that are factors of 1525. The greatest factor of 1525 is 1525.
4. How to Find the LCM of 1520 and 1525?
Answer:
Least Common Multiple of 1520 and 1525 = 463600
Step 1: Find the prime factorization of 1520
1520 = 2 x 2 x 2 x 2 x 5 x 19
Step 2: Find the prime factorization of 1525
1525 = 5 x 5 x 61
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 463600 = 2 x 2 x 2 x 2 x 5 x 5 x 19 x 61
Step 4: Therefore, the least common multiple of 1520 and 1525 is 463600.