The number 80143
80143 is a composite number with 6 divisors. Its prime factorisation is 7 Ć . Divisors (6): 1, 7, 107, 749, 11449, 80143.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
80143 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
80143 is composite. Its prime factorisation is
- 3
The divisors add up to 92456; without 80143 itself that is 12313, so 80143 is deficient (12313 is less than 80143). Euler's totient Ļ(80143) = 68052 numbers up to 80143 share no factor with it.
- 4
The digits of 80143 add up to 16, and repeating that until one digit is left gives the digital root 7. The Collatz sequence (halve if even, else 3n+1) takes 68 steps to reach 1.
LaTeX source of the formulas on this page
\[ 80143 = 7 \times 107^{2} \]80143 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 6 |
| Sum of divisors | 92456 |
| Euler totient Ļ(n) | 68052 |
| Square | 6422900449 |
| Cube | 514750510684207 |
| Square root | 283.095390 (= 107ā7) |
| Digit sum / digital root | 16 / 7 |
| Collatz steps to 1 | 68 |
| Scientific notation | 8.0143 Ć |
80143 in other forms
| Form | Value |
|---|---|
| In words | eighty thousand one hundred and forty-three |
| Binary (base 2) | 10011100100001111 |
| Octal (base 8) | 234417 |
| Hexadecimal (base 16) | 1390F |
| Base 3 | 11001221021 |
| As time | 80143 seconds = 22 h 15 min 43 s |
Is 80143 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 | Yes (80143 Ć· 7 = 11449) | 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 7) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 7) | 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 8) | 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 80143 a prime number?
No. 80143 = 7 Ć , so it is divisible by 7.
What are the factors of 80143?
1, 7, 107, 749, 11449, 80143.
What is 80143 in binary?
10011100100001111 (hexadecimal 1390F, octal 234417).
What is the square root of 80143?
About 283.0954, exactly 107ā7.
Is 80143 divisible by 3?
No. Its digits add up to 16, which is not a multiple of 3.
What is special about the number 80143?
It is a composite number with 6 divisors.