The number 17143
17143 is a composite number with 8 divisors. Its prime factorisation is 7 × 31 × 79. Divisors (8): 1, 7, 31, 79, 217, 553, 2449, 17143.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
17143 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
17143 is composite. Its prime factorisation is
- 3
The divisors add up to 20480; without 17143 itself that is 3337, so 17143 is deficient (3337 is less than 17143). Euler's totient φ(17143) = 14040 numbers up to 17143 share no factor with it.
- 4
The digits of 17143 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 172 steps to reach 1.
LaTeX source of the formulas on this page
\[ 17143 = 7 \times 31 \times 79 \]
17143 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 8 |
| Sum of divisors | 20480 |
| Euler totient φ(n) | 14040 |
| Square | 293882449 |
| Cube | 5038026823207 |
| Square root | 130.931280 |
| Digit sum / digital root | 16 / 7 |
| Collatz steps to 1 | 172 |
| Scientific notation | 1.7143 × |
17143 in other forms
| Form | Value |
|---|---|
| In words | seventeen thousand one hundred and forty-three |
| Binary (base 2) | 100001011110111 |
| Octal (base 8) | 41367 |
| Hexadecimal (base 16) | 42F7 |
| Base 3 | 212111221 |
| As time | 17143 seconds = 4 h 45 min 43 s |
Is 17143 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 (17143 ÷ 7 = 2449) | 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 5) | 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 17143 a prime number?
No. 17143 = 7 × 31 × 79, so it is divisible by 7.
What are the factors of 17143?
1, 7, 31, 79, 217, 553, 2449, 17143.
What is 17143 in binary?
100001011110111 (hexadecimal 42F7, octal 41367).
What is the square root of 17143?
About 130.9313.
Is 17143 divisible by 3?
No. Its digits add up to 16, which is not a multiple of 3.
What is special about the number 17143?
It is a composite number with 8 divisors.