Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 7778 and 7784 the smallest integer that is 30271976 that is divisible by both numbers.
Least Common Multiple (LCM) of 7778 and 7784 is 30271976.
LCM(7778,7784) = 30271976
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 7778 and 7784. First we will calculate the prime factors of 7778 and 7784.
Prime Factorization of 7778
2 | 7778 |
3889 | 3889 |
1 |
Prime factors of 7778 are 2,3889. Prime factorization of 7778 in exponential form is:
7778 = 21×38891
Prime Factorization of 7784
2 | 7784 |
2 | 3892 |
2 | 1946 |
7 | 973 |
139 | 139 |
1 |
Prime factors of 7784 are 2, 7,139. Prime factorization of 7784 in exponential form is:
7784 = 23×71×1391
Now multiplying the highest exponent prime factors to calculate the LCM of 7778 and 7784.
LCM(7778,7784) = 23×71×1391×38891
LCM(7778,7784) = 30271976
Factors of 7778
List of positive integer factors of 7778 that divides 7778 without a remainder.
1, 2, 3889, 7778
Factors of 7784
List of positive integer factors of 7784 that divides 7784 without a remainder.
1, 2, 4, 7, 8, 14, 28, 56, 139, 278, 556, 973, 1112, 1946, 3892, 7784
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 7778 and 7784, than apply into the LCM equation.
GCF(7778,7784) = 2
LCM(7778,7784) = ( 7778 × 7784) / 2
LCM(7778,7784) = 60543952 / 2
LCM(7778,7784) = 30271976
(i) The LCM of 7784 and 7778 is associative
LCM of 7778 and 7784 = LCM of 7784 and 7778
1. What is the LCM of 7778 and 7784?
Answer: LCM of 7778 and 7784 is 30271976.
2. What are the Factors of 7778?
Answer: Factors of 7778 are 1, 2, 3889, 7778. There are 4 integers that are factors of 7778. The greatest factor of 7778 is 7778.
3. What are the Factors of 7784?
Answer: Factors of 7784 are 1, 2, 4, 7, 8, 14, 28, 56, 139, 278, 556, 973, 1112, 1946, 3892, 7784. There are 16 integers that are factors of 7784. The greatest factor of 7784 is 7784.
4. How to Find the LCM of 7778 and 7784?
Answer:
Least Common Multiple of 7778 and 7784 = 30271976
Step 1: Find the prime factorization of 7778
7778 = 2 x 3889
Step 2: Find the prime factorization of 7784
7784 = 2 x 2 x 2 x 7 x 139
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 30271976 = 2 x 2 x 2 x 7 x 139 x 3889
Step 4: Therefore, the least common multiple of 7778 and 7784 is 30271976.