Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 7905 and 7912 the smallest integer that is 62544360 that is divisible by both numbers.
Least Common Multiple (LCM) of 7905 and 7912 is 62544360.
LCM(7905,7912) = 62544360
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 7905 and 7912. First we will calculate the prime factors of 7905 and 7912.
Prime Factorization of 7905
3 | 7905 |
5 | 2635 |
17 | 527 |
31 | 31 |
1 |
Prime factors of 7905 are 3, 5, 17,31. Prime factorization of 7905 in exponential form is:
7905 = 31×51×171×311
Prime Factorization of 7912
2 | 7912 |
2 | 3956 |
2 | 1978 |
23 | 989 |
43 | 43 |
1 |
Prime factors of 7912 are 2, 23,43. Prime factorization of 7912 in exponential form is:
7912 = 23×231×431
Now multiplying the highest exponent prime factors to calculate the LCM of 7905 and 7912.
LCM(7905,7912) = 23×31×51×171×231×311×431
LCM(7905,7912) = 62544360
Factors of 7905
List of positive integer factors of 7905 that divides 7905 without a remainder.
1, 3, 5, 15, 17, 31, 51, 85, 93, 155, 255, 465, 527, 1581, 2635, 7905
Factors of 7912
List of positive integer factors of 7912 that divides 7912 without a remainder.
1, 2, 4, 8, 23, 43, 46, 86, 92, 172, 184, 344, 989, 1978, 3956, 7912
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 7905 and 7912, than apply into the LCM equation.
GCF(7905,7912) = 1
LCM(7905,7912) = ( 7905 × 7912) / 1
LCM(7905,7912) = 62544360 / 1
LCM(7905,7912) = 62544360
(i) The LCM of 7912 and 7905 is associative
LCM of 7905 and 7912 = LCM of 7912 and 7905
1. What is the LCM of 7905 and 7912?
Answer: LCM of 7905 and 7912 is 62544360.
2. What are the Factors of 7905?
Answer: Factors of 7905 are 1, 3, 5, 15, 17, 31, 51, 85, 93, 155, 255, 465, 527, 1581, 2635, 7905. There are 16 integers that are factors of 7905. The greatest factor of 7905 is 7905.
3. What are the Factors of 7912?
Answer: Factors of 7912 are 1, 2, 4, 8, 23, 43, 46, 86, 92, 172, 184, 344, 989, 1978, 3956, 7912. There are 16 integers that are factors of 7912. The greatest factor of 7912 is 7912.
4. How to Find the LCM of 7905 and 7912?
Answer:
Least Common Multiple of 7905 and 7912 = 62544360
Step 1: Find the prime factorization of 7905
7905 = 3 x 5 x 17 x 31
Step 2: Find the prime factorization of 7912
7912 = 2 x 2 x 2 x 23 x 43
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 62544360 = 2 x 2 x 2 x 3 x 5 x 17 x 23 x 31 x 43
Step 4: Therefore, the least common multiple of 7905 and 7912 is 62544360.