Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 787 and 788 the smallest integer that is 620156 that is divisible by both numbers.
Least Common Multiple (LCM) of 787 and 788 is 620156.
LCM(787,788) = 620156
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 787 and 788. First we will calculate the prime factors of 787 and 788.
Prime Factorization of 787
787 | 787 |
1 |
Prime factors of 787 are 787. Prime factorization of 787 in exponential form is:
787 = 7871
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
Now multiplying the highest exponent prime factors to calculate the LCM of 787 and 788.
LCM(787,788) = 22×1971×7871
LCM(787,788) = 620156
Factors of 787
List of positive integer factors of 787 that divides 787 without a remainder.
1, 787
Factors of 788
List of positive integer factors of 788 that divides 788 without a remainder.
1, 2, 4, 197, 394, 788
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 787 and 788, than apply into the LCM equation.
GCF(787,788) = 1
LCM(787,788) = ( 787 × 788) / 1
LCM(787,788) = 620156 / 1
LCM(787,788) = 620156
(i) The LCM of 788 and 787 is associative
LCM of 787 and 788 = LCM of 788 and 787
1. What is the LCM of 787 and 788?
Answer: LCM of 787 and 788 is 620156.
2. What are the Factors of 787?
Answer: Factors of 787 are 1, 787. There are 2 integers that are factors of 787. The greatest factor of 787 is 787.
3. 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.
4. How to Find the LCM of 787 and 788?
Answer:
Least Common Multiple of 787 and 788 = 620156
Step 1: Find the prime factorization of 787
787 = 787
Step 2: Find the prime factorization of 788
788 = 2 x 2 x 197
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 620156 = 2 x 2 x 197 x 787
Step 4: Therefore, the least common multiple of 787 and 788 is 620156.