Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 7894 and 7900 the smallest integer that is 31181300 that is divisible by both numbers.
Least Common Multiple (LCM) of 7894 and 7900 is 31181300.
LCM(7894,7900) = 31181300
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 7894 and 7900. First we will calculate the prime factors of 7894 and 7900.
Prime Factorization of 7894
2 | 7894 |
3947 | 3947 |
1 |
Prime factors of 7894 are 2,3947. Prime factorization of 7894 in exponential form is:
7894 = 21×39471
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
Now multiplying the highest exponent prime factors to calculate the LCM of 7894 and 7900.
LCM(7894,7900) = 22×52×791×39471
LCM(7894,7900) = 31181300
Factors of 7894
List of positive integer factors of 7894 that divides 7894 without a remainder.
1, 2, 3947, 7894
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
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 7894 and 7900, than apply into the LCM equation.
GCF(7894,7900) = 2
LCM(7894,7900) = ( 7894 × 7900) / 2
LCM(7894,7900) = 62362600 / 2
LCM(7894,7900) = 31181300
(i) The LCM of 7900 and 7894 is associative
LCM of 7894 and 7900 = LCM of 7900 and 7894
1. What is the LCM of 7894 and 7900?
Answer: LCM of 7894 and 7900 is 31181300.
2. What are the Factors of 7894?
Answer: Factors of 7894 are 1, 2, 3947, 7894. There are 4 integers that are factors of 7894. The greatest factor of 7894 is 7894.
3. 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.
4. How to Find the LCM of 7894 and 7900?
Answer:
Least Common Multiple of 7894 and 7900 = 31181300
Step 1: Find the prime factorization of 7894
7894 = 2 x 3947
Step 2: Find the prime factorization of 7900
7900 = 2 x 2 x 5 x 5 x 79
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 31181300 = 2 x 2 x 5 x 5 x 79 x 3947
Step 4: Therefore, the least common multiple of 7894 and 7900 is 31181300.