Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 788 and 791 the smallest integer that is 623308 that is divisible by both numbers.
Least Common Multiple (LCM) of 788 and 791 is 623308.
LCM(788,791) = 623308
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 788 and 791. First we will calculate the prime factors of 788 and 791.
Prime Factorization of 788
2 | 788 |
2 | 394 |
197 | 197 |
1 |
Prime factors of 788 are 2,197. Prime factorization of 788 in exponential form is:
788 = 22×1971
Prime Factorization of 791
7 | 791 |
113 | 113 |
1 |
Prime factors of 791 are 7,113. Prime factorization of 791 in exponential form is:
791 = 71×1131
Now multiplying the highest exponent prime factors to calculate the LCM of 788 and 791.
LCM(788,791) = 22×71×1131×1971
LCM(788,791) = 623308
Factors of 788
List of positive integer factors of 788 that divides 788 without a remainder.
1, 2, 4, 197, 394, 788
Factors of 791
List of positive integer factors of 791 that divides 791 without a remainder.
1, 7, 113, 791
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 788 and 791, than apply into the LCM equation.
GCF(788,791) = 1
LCM(788,791) = ( 788 × 791) / 1
LCM(788,791) = 623308 / 1
LCM(788,791) = 623308
(i) The LCM of 791 and 788 is associative
LCM of 788 and 791 = LCM of 791 and 788
1. What is the LCM of 788 and 791?
Answer: LCM of 788 and 791 is 623308.
2. What are the Factors of 788?
Answer: Factors of 788 are 1, 2, 4, 197, 394, 788. There are 6 integers that are factors of 788. The greatest factor of 788 is 788.
3. What are the Factors of 791?
Answer: Factors of 791 are 1, 7, 113, 791. There are 4 integers that are factors of 791. The greatest factor of 791 is 791.
4. How to Find the LCM of 788 and 791?
Answer:
Least Common Multiple of 788 and 791 = 623308
Step 1: Find the prime factorization of 788
788 = 2 x 2 x 197
Step 2: Find the prime factorization of 791
791 = 7 x 113
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 623308 = 2 x 2 x 7 x 113 x 197
Step 4: Therefore, the least common multiple of 788 and 791 is 623308.