Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 860 and 865 the smallest integer that is 148780 that is divisible by both numbers.
Least Common Multiple (LCM) of 860 and 865 is 148780.
LCM(860,865) = 148780
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 860 and 865. First we will calculate the prime factors of 860 and 865.
Prime Factorization of 860
2 | 860 |
2 | 430 |
5 | 215 |
43 | 43 |
1 |
Prime factors of 860 are 2, 5,43. Prime factorization of 860 in exponential form is:
860 = 22×51×431
Prime Factorization of 865
5 | 865 |
173 | 173 |
1 |
Prime factors of 865 are 5,173. Prime factorization of 865 in exponential form is:
865 = 51×1731
Now multiplying the highest exponent prime factors to calculate the LCM of 860 and 865.
LCM(860,865) = 22×51×431×1731
LCM(860,865) = 148780
Factors of 860
List of positive integer factors of 860 that divides 860 without a remainder.
1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860
Factors of 865
List of positive integer factors of 865 that divides 865 without a remainder.
1, 5, 173, 865
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 860 and 865, than apply into the LCM equation.
GCF(860,865) = 5
LCM(860,865) = ( 860 × 865) / 5
LCM(860,865) = 743900 / 5
LCM(860,865) = 148780
(i) The LCM of 865 and 860 is associative
LCM of 860 and 865 = LCM of 865 and 860
1. What is the LCM of 860 and 865?
Answer: LCM of 860 and 865 is 148780.
2. What are the Factors of 860?
Answer: Factors of 860 are 1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860. There are 12 integers that are factors of 860. The greatest factor of 860 is 860.
3. What are the Factors of 865?
Answer: Factors of 865 are 1, 5, 173, 865. There are 4 integers that are factors of 865. The greatest factor of 865 is 865.
4. How to Find the LCM of 860 and 865?
Answer:
Least Common Multiple of 860 and 865 = 148780
Step 1: Find the prime factorization of 860
860 = 2 x 2 x 5 x 43
Step 2: Find the prime factorization of 865
865 = 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 = 148780 = 2 x 2 x 5 x 43 x 173
Step 4: Therefore, the least common multiple of 860 and 865 is 148780.