Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 783 and 789 the smallest integer that is 205929 that is divisible by both numbers.
Least Common Multiple (LCM) of 783 and 789 is 205929.
LCM(783,789) = 205929
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 783 and 789. First we will calculate the prime factors of 783 and 789.
Prime Factorization of 783
3 | 783 |
3 | 261 |
3 | 87 |
29 | 29 |
1 |
Prime factors of 783 are 3,29. Prime factorization of 783 in exponential form is:
783 = 33×291
Prime Factorization of 789
3 | 789 |
263 | 263 |
1 |
Prime factors of 789 are 3,263. Prime factorization of 789 in exponential form is:
789 = 31×2631
Now multiplying the highest exponent prime factors to calculate the LCM of 783 and 789.
LCM(783,789) = 33×291×2631
LCM(783,789) = 205929
Factors of 783
List of positive integer factors of 783 that divides 783 without a remainder.
1, 3, 9, 27, 29, 87, 261, 783
Factors of 789
List of positive integer factors of 789 that divides 789 without a remainder.
1, 3, 263, 789
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 783 and 789, than apply into the LCM equation.
GCF(783,789) = 3
LCM(783,789) = ( 783 × 789) / 3
LCM(783,789) = 617787 / 3
LCM(783,789) = 205929
(i) The LCM of 789 and 783 is associative
LCM of 783 and 789 = LCM of 789 and 783
1. What is the LCM of 783 and 789?
Answer: LCM of 783 and 789 is 205929.
2. What are the Factors of 783?
Answer: Factors of 783 are 1, 3, 9, 27, 29, 87, 261, 783. There are 8 integers that are factors of 783. The greatest factor of 783 is 783.
3. What are the Factors of 789?
Answer: Factors of 789 are 1, 3, 263, 789. There are 4 integers that are factors of 789. The greatest factor of 789 is 789.
4. How to Find the LCM of 783 and 789?
Answer:
Least Common Multiple of 783 and 789 = 205929
Step 1: Find the prime factorization of 783
783 = 3 x 3 x 3 x 29
Step 2: Find the prime factorization of 789
789 = 3 x 263
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 205929 = 3 x 3 x 3 x 29 x 263
Step 4: Therefore, the least common multiple of 783 and 789 is 205929.