Created By : Jatin Gogia
Reviewed By : Rajasekhar Valipishetty
Last Updated : Apr 06, 2023
Free LCM Calculator determines the least common multiple (LCM) between 1772 and 1778 the smallest integer that is 1575308 that is divisible by both numbers.
Least Common Multiple (LCM) of 1772 and 1778 is 1575308.
LCM(1772,1778) = 1575308
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 1772 and 1778. First we will calculate the prime factors of 1772 and 1778.
Prime Factorization of 1772
2 | 1772 |
2 | 886 |
443 | 443 |
1 |
Prime factors of 1772 are 2,443. Prime factorization of 1772 in exponential form is:
1772 = 22×4431
Prime Factorization of 1778
2 | 1778 |
7 | 889 |
127 | 127 |
1 |
Prime factors of 1778 are 2, 7,127. Prime factorization of 1778 in exponential form is:
1778 = 21×71×1271
Now multiplying the highest exponent prime factors to calculate the LCM of 1772 and 1778.
LCM(1772,1778) = 22×71×1271×4431
LCM(1772,1778) = 1575308
Factors of 1772
List of positive integer factors of 1772 that divides 1772 without a remainder.
1, 2, 4, 443, 886, 1772
Factors of 1778
List of positive integer factors of 1778 that divides 1778 without a remainder.
1, 2, 7, 14, 127, 254, 889, 1778
The formula of LCM is LCM(a,b) = ( a × b) / GCF(a,b).
We need to calculate greatest common factor 1772 and 1778, than apply into the LCM equation.
GCF(1772,1778) = 2
LCM(1772,1778) = ( 1772 × 1778) / 2
LCM(1772,1778) = 3150616 / 2
LCM(1772,1778) = 1575308
(i) The LCM of 1778 and 1772 is associative
LCM of 1772 and 1778 = LCM of 1778 and 1772
1. What is the LCM of 1772 and 1778?
Answer: LCM of 1772 and 1778 is 1575308.
2. What are the Factors of 1772?
Answer: Factors of 1772 are 1, 2, 4, 443, 886, 1772. There are 6 integers that are factors of 1772. The greatest factor of 1772 is 1772.
3. What are the Factors of 1778?
Answer: Factors of 1778 are 1, 2, 7, 14, 127, 254, 889, 1778. There are 8 integers that are factors of 1778. The greatest factor of 1778 is 1778.
4. How to Find the LCM of 1772 and 1778?
Answer:
Least Common Multiple of 1772 and 1778 = 1575308
Step 1: Find the prime factorization of 1772
1772 = 2 x 2 x 443
Step 2: Find the prime factorization of 1778
1778 = 2 x 7 x 127
Step 3: Multiply each factor the greater number of times it occurs in steps i) or ii) above to find the lcm:
LCM = 1575308 = 2 x 2 x 7 x 127 x 443
Step 4: Therefore, the least common multiple of 1772 and 1778 is 1575308.