LCM for 30, 40 and 50
"Least Common Multiple of 3 Numbers" Calculator
What's the Least Common Multiple (LCM) of 30, 40 and 50?
Answer
LCM of 30, 40 and 50 is
600
First common multiples: 600; 1,200; 1,800; …
600 is divisible by all three: 600 ÷ 30 = 20, 600 ÷ 40 = 15, 600 ÷ 50 = 12 — and 20, 15 and 12 have no factor but 1 common to all of them, so no smaller number is. As a common denominator: multiply the top and bottom of x/30 by 20 and of y/40 by 15 and of z/50 by 12.
30 = 2 × 3 × 5
40 = 23 × 5
50 = 2 × 52
| Prime | 30 | 40 | 50 | Highest power |
|---|---|---|---|---|
| 2 | 2 | 23 | 2 | 23 |
| 3 | 3 | — | — | 3 |
| 5 | 5 | 5 | 52 | 52 |
— = power 0: the prime is not a factor of this number; the LCM takes it from the number that has it.
LCM = 23 × 3 × 52 = 600
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See Also
- Greatest Common Factor of 3 Numbers - Find the Greatest Common Factor (GCF) of three numbers
- Least Common Multiple - Find the Least Common Multiple (LCM) of two numbers
- Greatest Common Factor - Find the Greatest Common Factor (GCF) of two numbers
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LCM Table
| 1st | 2nd | 3rd | LCM |
|---|---|---|---|
| 30 | 35 | 40 | 840 |
| 30 | 36 | 40 | 360 |
| 30 | 37 | 40 | 4,440 |
| 30 | 38 | 40 | 2,280 |
| 30 | 39 | 40 | 1,560 |
| 30 | 40 | 40 | 120 |
| 30 | 40 | 41 | 4,920 |
| 30 | 40 | 42 | 840 |
| 30 | 40 | 43 | 5,160 |
| 30 | 40 | 44 | 1,320 |
| 30 | 40 | 45 | 360 |
| 30 | 40 | 46 | 2,760 |
| 30 | 40 | 47 | 5,640 |
| 30 | 40 | 48 | 240 |
| 30 | 40 | 49 | 5,880 |
| 30 | 40 | 50 | 600 |
| 30 | 40 | 51 | 2,040 |
| 30 | 40 | 52 | 1,560 |
| 30 | 40 | 53 | 6,360 |
| 30 | 40 | 54 | 1,080 |
| 30 | 40 | 55 | 1,320 |
| 30 | 40 | 56 | 840 |
| 30 | 40 | 57 | 2,280 |
| 30 | 40 | 58 | 3,480 |
| 30 | 40 | 59 | 7,080 |
| 30 | 40 | 60 | 120 |
| 30 | 40 | 61 | 7,320 |
| 30 | 40 | 62 | 3,720 |
| 30 | 40 | 63 | 2,520 |
| 30 | 40 | 64 | 960 |