Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 7900 and 7908 the smallest integer that is 15618300 that is divisible by both numbers.
Least Common Multiple (LCM) of 7900 and 7908 is 15618300.
LCM(7900,7908) = 15618300
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 7900 and 7908. First we will calculate the prime factors of 7900 and 7908.
Prime Factorization of 7900
2 | 7900 |
2 | 3950 |
5 | 1975 |
5 | 395 |
79 | 79 |
1 |
Prime factors of 7900 are 2, 5,79. Prime factorization of 7900 in exponential form is:
7900 = 22×52×791
Prime Factorization of 7908
2 | 7908 |
2 | 3954 |
3 | 1977 |
659 | 659 |
1 |
Prime factors of 7908 are 2, 3,659. Prime factorization of 7908 in exponential form is:
7908 = 22×31×6591
Now multiplying the highest exponent prime factors to calculate the LCM of 7900 and 7908.
LCM(7900,7908) = 22×31×52×791×6591
LCM(7900,7908) = 15618300
Factors of 7900
List of positive integer factors of 7900 that divides 7900 without a remainder.
1, 2, 4, 5, 10, 20, 25, 50, 79, 100, 158, 316, 395, 790, 1580, 1975, 3950, 7900
Factors of 7908
List of positive integer factors of 7908 that divides 7908 without a remainder.
1, 2, 3, 4, 6, 12, 659, 1318, 1977, 2636, 3954, 7908
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 7900 and 7908, than apply into the LCM equation.
GCF(7900,7908) = 4
LCM(7900,7908) = ( 7900 × 7908) / 4
LCM(7900,7908) = 62473200 / 4
LCM(7900,7908) = 15618300
(i) The LCM of 7908 and 7900 is associative
LCM of 7900 and 7908 = LCM of 7908 and 7900
1. What is the LCM of 7900 and 7908?
Answer: LCM of 7900 and 7908 is 15618300.
2. What are the Factors of 7900?
Answer: Factors of 7900 are 1, 2, 4, 5, 10, 20, 25, 50, 79, 100, 158, 316, 395, 790, 1580, 1975, 3950, 7900. There are 18 integers that are factors of 7900. The greatest factor of 7900 is 7900.
3. What are the Factors of 7908?
Answer: Factors of 7908 are 1, 2, 3, 4, 6, 12, 659, 1318, 1977, 2636, 3954, 7908. There are 12 integers that are factors of 7908. The greatest factor of 7908 is 7908.
4. How to Find the LCM of 7900 and 7908?
Answer:
Least Common Multiple of 7900 and 7908 = 15618300
Step 1: Find the prime factorization of 7900
7900 = 2 x 2 x 5 x 5 x 79
Step 2: Find the prime factorization of 7908
7908 = 2 x 2 x 3 x 659
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 15618300 = 2 x 2 x 3 x 5 x 5 x 79 x 659
Step 4: Therefore, the least common multiple of 7900 and 7908 is 15618300.