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 7785 the smallest integer that is 60551730 that is divisible by both numbers.
Least Common Multiple (LCM) of 7778 and 7785 is 60551730.
LCM(7778,7785) = 60551730
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 7785. First we will calculate the prime factors of 7778 and 7785.
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 7785
3 | 7785 |
3 | 2595 |
5 | 865 |
173 | 173 |
1 |
Prime factors of 7785 are 3, 5,173. Prime factorization of 7785 in exponential form is:
7785 = 32×51×1731
Now multiplying the highest exponent prime factors to calculate the LCM of 7778 and 7785.
LCM(7778,7785) = 21×32×51×1731×38891
LCM(7778,7785) = 60551730
Factors of 7778
List of positive integer factors of 7778 that divides 7778 without a remainder.
1, 2, 3889, 7778
Factors of 7785
List of positive integer factors of 7785 that divides 7785 without a remainder.
1, 3, 5, 9, 15, 45, 173, 519, 865, 1557, 2595, 7785
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 7778 and 7785, than apply into the LCM equation.
GCF(7778,7785) = 1
LCM(7778,7785) = ( 7778 × 7785) / 1
LCM(7778,7785) = 60551730 / 1
LCM(7778,7785) = 60551730
(i) The LCM of 7785 and 7778 is associative
LCM of 7778 and 7785 = LCM of 7785 and 7778
1. What is the LCM of 7778 and 7785?
Answer: LCM of 7778 and 7785 is 60551730.
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 7785?
Answer: Factors of 7785 are 1, 3, 5, 9, 15, 45, 173, 519, 865, 1557, 2595, 7785. There are 12 integers that are factors of 7785. The greatest factor of 7785 is 7785.
4. How to Find the LCM of 7778 and 7785?
Answer:
Least Common Multiple of 7778 and 7785 = 60551730
Step 1: Find the prime factorization of 7778
7778 = 2 x 3889
Step 2: Find the prime factorization of 7785
7785 = 3 x 3 x 5 x 173
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 60551730 = 2 x 3 x 3 x 5 x 173 x 3889
Step 4: Therefore, the least common multiple of 7778 and 7785 is 60551730.