Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 2787 and 2788 the smallest integer that is 7770156 that is divisible by both numbers.
Least Common Multiple (LCM) of 2787 and 2788 is 7770156.
LCM(2787,2788) = 7770156
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 2787 and 2788. First we will calculate the prime factors of 2787 and 2788.
Prime Factorization of 2787
3 | 2787 |
929 | 929 |
1 |
Prime factors of 2787 are 3,929. Prime factorization of 2787 in exponential form is:
2787 = 31×9291
Prime Factorization of 2788
2 | 2788 |
2 | 1394 |
17 | 697 |
41 | 41 |
1 |
Prime factors of 2788 are 2, 17,41. Prime factorization of 2788 in exponential form is:
2788 = 22×171×411
Now multiplying the highest exponent prime factors to calculate the LCM of 2787 and 2788.
LCM(2787,2788) = 22×31×171×411×9291
LCM(2787,2788) = 7770156
Factors of 2787
List of positive integer factors of 2787 that divides 2787 without a remainder.
1, 3, 929, 2787
Factors of 2788
List of positive integer factors of 2788 that divides 2788 without a remainder.
1, 2, 4, 17, 34, 41, 68, 82, 164, 697, 1394, 2788
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 2787 and 2788, than apply into the LCM equation.
GCF(2787,2788) = 1
LCM(2787,2788) = ( 2787 × 2788) / 1
LCM(2787,2788) = 7770156 / 1
LCM(2787,2788) = 7770156
(i) The LCM of 2788 and 2787 is associative
LCM of 2787 and 2788 = LCM of 2788 and 2787
1. What is the LCM of 2787 and 2788?
Answer: LCM of 2787 and 2788 is 7770156.
2. What are the Factors of 2787?
Answer: Factors of 2787 are 1, 3, 929, 2787. There are 4 integers that are factors of 2787. The greatest factor of 2787 is 2787.
3. What are the Factors of 2788?
Answer: Factors of 2788 are 1, 2, 4, 17, 34, 41, 68, 82, 164, 697, 1394, 2788. There are 12 integers that are factors of 2788. The greatest factor of 2788 is 2788.
4. How to Find the LCM of 2787 and 2788?
Answer:
Least Common Multiple of 2787 and 2788 = 7770156
Step 1: Find the prime factorization of 2787
2787 = 3 x 929
Step 2: Find the prime factorization of 2788
2788 = 2 x 2 x 17 x 41
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 7770156 = 2 x 2 x 3 x 17 x 41 x 929
Step 4: Therefore, the least common multiple of 2787 and 2788 is 7770156.