LCM for 39 and 45
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What's the Least Common Multiple (LCM) of 39 and 45?
Answer
LCM of 39 and 45 is
585
First common multiples: 585; 1,170; 1,755; …
585 is divisible by both: 585 ÷ 39 = 15, 585 ÷ 45 = 13 — and 15 and 13 share no factor but 1, so no smaller number is. As a common denominator: multiply the top and bottom of x/39 by 15 and of y/45 by 13.
39 = 3 × 13
45 = 32 × 5
| Prime | 39 | 45 | Highest power |
|---|---|---|---|
| 3 | 3 | 32 | 32 |
| 5 | — | 5 | 5 |
| 13 | 13 | — | 13 |
— = power 0: the prime is not a factor of this number; the LCM takes it from the number that has it.
LCM = 32 × 5 × 13 = 585
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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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