LCM for 19 and 42
"Least Common Multiple" Calculator
What's the Least Common Multiple (LCM) of 19 and 42?
Answer
LCM of 19 and 42 is
798
First common multiples: 798; 1,596; 2,394; …
798 is divisible by both: 798 ÷ 19 = 42, 798 ÷ 42 = 19 — and 42 and 19 share no factor but 1, so no smaller number is. As a common denominator: multiply the top and bottom of x/19 by 42 and of y/42 by 19.
19 and 42 are coprime (GCF = 1), so their LCM is simply the product: 19 × 42 = 798.
19 — prime
42 = 2 × 3 × 7
| Prime | 19 | 42 | Highest power |
|---|---|---|---|
| 2 | — | 2 | 2 |
| 3 | — | 3 | 3 |
| 7 | — | 7 | 7 |
| 19 | 19 | — | 19 |
— = power 0: the prime is not a factor of this number; the LCM takes it from the number that has it.
LCM = 2 × 3 × 7 × 19 = 798
More with these numbers
Found an error in the calculation or the information?
Related Calculations
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
Share This Calculation
Print
<a href="https://calculat.io/en/number/least-common-multiple-lcm-of/19--42">What is the LCM of 19 and 42? - Calculatio</a>Facebook
Twitter
Telegram
WhatsApp
Viber
Email
