Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 771 and 778 the smallest integer that is 599838 that is divisible by both numbers.
Least Common Multiple (LCM) of 771 and 778 is 599838.
LCM(771,778) = 599838
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 771 and 778. First we will calculate the prime factors of 771 and 778.
Prime Factorization of 771
3 | 771 |
257 | 257 |
1 |
Prime factors of 771 are 3,257. Prime factorization of 771 in exponential form is:
771 = 31×2571
Prime Factorization of 778
2 | 778 |
389 | 389 |
1 |
Prime factors of 778 are 2,389. Prime factorization of 778 in exponential form is:
778 = 21×3891
Now multiplying the highest exponent prime factors to calculate the LCM of 771 and 778.
LCM(771,778) = 21×31×2571×3891
LCM(771,778) = 599838
Factors of 771
List of positive integer factors of 771 that divides 771 without a remainder.
1, 3, 257, 771
Factors of 778
List of positive integer factors of 778 that divides 778 without a remainder.
1, 2, 389, 778
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 771 and 778, than apply into the LCM equation.
GCF(771,778) = 1
LCM(771,778) = ( 771 × 778) / 1
LCM(771,778) = 599838 / 1
LCM(771,778) = 599838
(i) The LCM of 778 and 771 is associative
LCM of 771 and 778 = LCM of 778 and 771
1. What is the LCM of 771 and 778?
Answer: LCM of 771 and 778 is 599838.
2. What are the Factors of 771?
Answer: Factors of 771 are 1, 3, 257, 771. There are 4 integers that are factors of 771. The greatest factor of 771 is 771.
3. What are the Factors of 778?
Answer: Factors of 778 are 1, 2, 389, 778. There are 4 integers that are factors of 778. The greatest factor of 778 is 778.
4. How to Find the LCM of 771 and 778?
Answer:
Least Common Multiple of 771 and 778 = 599838
Step 1: Find the prime factorization of 771
771 = 3 x 257
Step 2: Find the prime factorization of 778
778 = 2 x 389
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 599838 = 2 x 3 x 257 x 389
Step 4: Therefore, the least common multiple of 771 and 778 is 599838.