Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 7120 and 7125 the smallest integer that is 10146000 that is divisible by both numbers.
Least Common Multiple (LCM) of 7120 and 7125 is 10146000.
LCM(7120,7125) = 10146000
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 7120 and 7125. First we will calculate the prime factors of 7120 and 7125.
Prime Factorization of 7120
2 | 7120 |
2 | 3560 |
2 | 1780 |
2 | 890 |
5 | 445 |
89 | 89 |
1 |
Prime factors of 7120 are 2, 5,89. Prime factorization of 7120 in exponential form is:
7120 = 24×51×891
Prime Factorization of 7125
3 | 7125 |
5 | 2375 |
5 | 475 |
5 | 95 |
19 | 19 |
1 |
Prime factors of 7125 are 3, 5,19. Prime factorization of 7125 in exponential form is:
7125 = 31×53×191
Now multiplying the highest exponent prime factors to calculate the LCM of 7120 and 7125.
LCM(7120,7125) = 24×31×53×191×891
LCM(7120,7125) = 10146000
Factors of 7120
List of positive integer factors of 7120 that divides 7120 without a remainder.
1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 89, 178, 356, 445, 712, 890, 1424, 1780, 3560, 7120
Factors of 7125
List of positive integer factors of 7125 that divides 7125 without a remainder.
1, 3, 5, 15, 19, 25, 57, 75, 95, 125, 285, 375, 475, 1425, 2375, 7125
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 7120 and 7125, than apply into the LCM equation.
GCF(7120,7125) = 5
LCM(7120,7125) = ( 7120 × 7125) / 5
LCM(7120,7125) = 50730000 / 5
LCM(7120,7125) = 10146000
(i) The LCM of 7125 and 7120 is associative
LCM of 7120 and 7125 = LCM of 7125 and 7120
1. What is the LCM of 7120 and 7125?
Answer: LCM of 7120 and 7125 is 10146000.
2. What are the Factors of 7120?
Answer: Factors of 7120 are 1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 89, 178, 356, 445, 712, 890, 1424, 1780, 3560, 7120. There are 20 integers that are factors of 7120. The greatest factor of 7120 is 7120.
3. What are the Factors of 7125?
Answer: Factors of 7125 are 1, 3, 5, 15, 19, 25, 57, 75, 95, 125, 285, 375, 475, 1425, 2375, 7125. There are 16 integers that are factors of 7125. The greatest factor of 7125 is 7125.
4. How to Find the LCM of 7120 and 7125?
Answer:
Least Common Multiple of 7120 and 7125 = 10146000
Step 1: Find the prime factorization of 7120
7120 = 2 x 2 x 2 x 2 x 5 x 89
Step 2: Find the prime factorization of 7125
7125 = 3 x 5 x 5 x 5 x 19
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 10146000 = 2 x 2 x 2 x 2 x 3 x 5 x 5 x 5 x 19 x 89
Step 4: Therefore, the least common multiple of 7120 and 7125 is 10146000.