The number 80043
80043 is a composite number with 4 divisors. Its prime factorisation is 3 × 26681. Divisors (4): 1, 3, 26681, 80043.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 80043: a semiprime: 3 × 26681, the product of two primes.
- 2
80043 is composite. Its prime factorisation is
- 3
The divisors add up to 106728; without 80043 itself that is 26685, so 80043 is deficient (26685 is less than 80043). Euler's totient φ(80043) = 53360 numbers up to 80043 share no factor with it.
- 4
The digits of 80043 add up to 15, and repeating that until one digit is left gives the digital root 6. The Collatz sequence (halve if even, else 3n+1) takes 68 steps to reach 1.
LaTeX source of the formulas on this page
\[ 80043 = 3 \times 26681 \]
80043 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 106728 |
| Euler totient φ(n) | 53360 |
| Square | 6406881849 |
| Cube | 512826043839507 |
| Square root | 282.918716 |
| Digit sum / digital root | 15 / 6 |
| Collatz steps to 1 | 68 |
| Scientific notation | 8.0043 × |
80043 in other forms
| Form | Value |
|---|---|
| In words | eighty thousand and forty-three |
| Binary (base 2) | 10011100010101011 |
| Octal (base 8) | 234253 |
| Hexadecimal (base 16) | 138AB |
| Base 3 | 11001210120 |
| As time | 80043 seconds = 22 h 14 min 3 s |
Is 80043 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | No (remainder 1) | A number is divisible by 2 if the last digit is even (0, 2, 4, 6, 8). |
| 3 | Yes (80043 ÷ 3 = 26681) | A number is divisible by 3 if the digits add up to a multiple of 3. |
| 4 | No (remainder 3) | A number is divisible by 4 if the last two digits make a multiple of 4. |
| 5 | No (remainder 3) | A number is divisible by 5 if the last digit is 0 or 5. |
| 6 | No (remainder 3) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | No (remainder 5) | A number is divisible by 7 if double the last digit and subtract it from the rest: the result is a multiple of 7. |
| 8 | No (remainder 3) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 6) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 3) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 7) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 3) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 80043 a prime number?
No. 80043 = 3 × 26681, so it is divisible by 3.
What are the factors of 80043?
1, 3, 26681, 80043.
What is 80043 in binary?
10011100010101011 (hexadecimal 138AB, octal 234253).
What is the square root of 80043?
About 282.9187.
Is 80043 divisible by 3?
Yes. Its digits add up to 15, a multiple of 3.
What is special about the number 80043?
80043 is a semiprime: 3 × 26681, the product of two primes.