LCM for 81 and 135
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What's the Least Common Multiple (LCM) of 81 and 135?
Answer
LCM of 81 and 135 is
405
First common multiples: 405; 810; 1,215; …
405 is divisible by both: 405 ÷ 81 = 5, 405 ÷ 135 = 3 — and 5 and 3 share no factor but 1, so no smaller number is. As a common denominator: multiply the top and bottom of x/81 by 5 and of y/135 by 3.
81 = 34
135 = 33 × 5
| Prime | 81 | 135 | Highest power |
|---|---|---|---|
| 3 | 34 | 33 | 34 |
| 5 | — | 5 | 5 |
— = power 0: the prime is not a factor of this number; the LCM takes it from the number that has it.
LCM = 34 × 5 = 405
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See Also
- Greatest Common Factor - Find the Greatest Common Factor (GCF) of two numbers
- Least Common Multiple of 3 Numbers - Find the Least Common Multiple (LCM) of three numbers
- Greatest Common Factor of 3 Numbers - Find the Greatest Common Factor (GCF) of three numbers
- Multiples of a Number - List the first 10 multiples of any number from 1 to 999
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LCM Table
| Number 1 | Number 2 | LCM |
|---|---|---|
| 81 | 120 | 3,240 |
| 81 | 121 | 9,801 |
| 81 | 122 | 9,882 |
| 81 | 123 | 3,321 |
| 81 | 124 | 10,044 |
| 81 | 125 | 10,125 |
| 81 | 126 | 1,134 |
| 81 | 127 | 10,287 |
| 81 | 128 | 10,368 |
| 81 | 129 | 3,483 |
| 81 | 130 | 10,530 |
| 81 | 131 | 10,611 |
| 81 | 132 | 3,564 |
| 81 | 133 | 10,773 |
| 81 | 134 | 10,854 |
| 81 | 135 | 405 |
| 81 | 136 | 11,016 |
| 81 | 137 | 11,097 |
| 81 | 138 | 3,726 |
| 81 | 139 | 11,259 |
| 81 | 140 | 11,340 |
| 81 | 141 | 3,807 |
| 81 | 142 | 11,502 |
| 81 | 143 | 11,583 |
| 81 | 144 | 1,296 |
| 81 | 145 | 11,745 |
| 81 | 146 | 11,826 |
| 81 | 147 | 3,969 |
| 81 | 148 | 11,988 |
| 81 | 149 | 12,069 |