Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 705 and 712 the smallest integer that is 501960 that is divisible by both numbers.
Least Common Multiple (LCM) of 705 and 712 is 501960.
LCM(705,712) = 501960
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 705 and 712. First we will calculate the prime factors of 705 and 712.
Prime Factorization of 705
3 | 705 |
5 | 235 |
47 | 47 |
1 |
Prime factors of 705 are 3, 5,47. Prime factorization of 705 in exponential form is:
705 = 31×51×471
Prime Factorization of 712
2 | 712 |
2 | 356 |
2 | 178 |
89 | 89 |
1 |
Prime factors of 712 are 2,89. Prime factorization of 712 in exponential form is:
712 = 23×891
Now multiplying the highest exponent prime factors to calculate the LCM of 705 and 712.
LCM(705,712) = 23×31×51×471×891
LCM(705,712) = 501960
Factors of 705
List of positive integer factors of 705 that divides 705 without a remainder.
1, 3, 5, 15, 47, 141, 235, 705
Factors of 712
List of positive integer factors of 712 that divides 712 without a remainder.
1, 2, 4, 8, 89, 178, 356, 712
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 705 and 712, than apply into the LCM equation.
GCF(705,712) = 1
LCM(705,712) = ( 705 × 712) / 1
LCM(705,712) = 501960 / 1
LCM(705,712) = 501960
(i) The LCM of 712 and 705 is associative
LCM of 705 and 712 = LCM of 712 and 705
1. What is the LCM of 705 and 712?
Answer: LCM of 705 and 712 is 501960.
2. What are the Factors of 705?
Answer: Factors of 705 are 1, 3, 5, 15, 47, 141, 235, 705. There are 8 integers that are factors of 705. The greatest factor of 705 is 705.
3. What are the Factors of 712?
Answer: Factors of 712 are 1, 2, 4, 8, 89, 178, 356, 712. There are 8 integers that are factors of 712. The greatest factor of 712 is 712.
4. How to Find the LCM of 705 and 712?
Answer:
Least Common Multiple of 705 and 712 = 501960
Step 1: Find the prime factorization of 705
705 = 3 x 5 x 47
Step 2: Find the prime factorization of 712
712 = 2 x 2 x 2 x 89
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 501960 = 2 x 2 x 2 x 3 x 5 x 47 x 89
Step 4: Therefore, the least common multiple of 705 and 712 is 501960.