The number 80443
80443 is a composite number with 8 divisors. Its prime factorisation is 11 × 71 × 103. Divisors (8): 1, 11, 71, 103, 781, 1133, 7313, 80443.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
80443 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
80443 is composite. Its prime factorisation is
- 3
The divisors add up to 89856; without 80443 itself that is 9413, so 80443 is deficient (9413 is less than 80443). Euler's totient φ(80443) = 71400 numbers up to 80443 share no factor with it.
- 4
The digits of 80443 add up to 19, and repeating that until one digit is left gives the digital root 1. The Collatz sequence (halve if even, else 3n+1) takes 94 steps to reach 1.
LaTeX source of the formulas on this page
\[ 80443 = 11 \times 71 \times 103 \]
80443 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 8 |
| Sum of divisors | 89856 |
| Euler totient φ(n) | 71400 |
| Square | 6471076249 |
| Cube | 520552786698307 |
| Square root | 283.624752 |
| Digit sum / digital root | 19 / 1 |
| Collatz steps to 1 | 94 |
| Scientific notation | 8.0443 × |
80443 in other forms
| Form | Value |
|---|---|
| In words | eighty thousand four hundred and forty-three |
| Binary (base 2) | 10011101000111011 |
| Octal (base 8) | 235073 |
| Hexadecimal (base 16) | 13A3B |
| Base 3 | 11002100101 |
| As time | 80443 seconds = 22 h 20 min 43 s |
Is 80443 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 | No (remainder 1) | 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 1) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | No (remainder 6) | 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 1) | 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 | Yes (80443 ÷ 11 = 7313) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 7) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 80443 a prime number?
No. 80443 = 11 × 71 × 103, so it is divisible by 11.
What are the factors of 80443?
1, 11, 71, 103, 781, 1133, 7313, 80443.
What is 80443 in binary?
10011101000111011 (hexadecimal 13A3B, octal 235073).
What is the square root of 80443?
About 283.6248.
Is 80443 divisible by 3?
No. Its digits add up to 19, which is not a multiple of 3.
What is special about the number 80443?
It is a composite number with 8 divisors.