LCM for 7 and 13
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What's the Least Common Multiple (LCM) of 7 and 13?
Answer
LCM of 7 and 13 is
91
First common multiples: 91, 182, 273, …
91 is divisible by both: 91 ÷ 7 = 13, 91 ÷ 13 = 7 — and 13 and 7 share no factor but 1, so no smaller number is. As a common denominator: multiply the top and bottom of x/7 by 13 and of y/13 by 7.
7 and 13 are coprime (GCF = 1), so their LCM is simply the product: 7 × 13 = 91.
7 — prime
13 — prime
| Prime | 7 | 13 | Highest power |
|---|---|---|---|
| 7 | 7 | — | 7 |
| 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 = 7 × 13 = 91
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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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