The number 71043
71043 is a composite number with 16 divisors. Its prime factorisation is 3 × 7 × 17 × 199. Divisors (16): 1, 3, 7, 17, 21, 51, 119, 199, 357, 597, 1393, 3383, 4179, 10149, 23681, 71043.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
71043 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
71043 is composite. Its prime factorisation is
- 3
The divisors add up to 115200; without 71043 itself that is 44157, so 71043 is deficient (44157 is less than 71043). Euler's totient φ(71043) = 38016 numbers up to 71043 share no factor with it.
- 4
The digits of 71043 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 99 steps to reach 1.
LaTeX source of the formulas on this page
\[ 71043 = 3 \times 7 \times 17 \times 199 \]
71043 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 16 |
| Sum of divisors | 115200 |
| Euler totient φ(n) | 38016 |
| Square | 5047107849 |
| Cube | 358561682916507 |
| Square root | 266.538928 |
| Digit sum / digital root | 15 / 6 |
| Collatz steps to 1 | 99 |
| Scientific notation | 7.1043 × |
71043 in other forms
| Form | Value |
|---|---|
| In words | seventy-one thousand and forty-three |
| Binary (base 2) | 10001010110000011 |
| Octal (base 8) | 212603 |
| Hexadecimal (base 16) | 11583 |
| Base 3 | 10121110020 |
| As time | 71043 seconds = 19 h 44 min 3 s |
Is 71043 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 (71043 ÷ 3 = 23681) | 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 | Yes (71043 ÷ 7 = 10149) | 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 5) | 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 71043 a prime number?
No. 71043 = 3 × 7 × 17 × 199, so it is divisible by 3.
What are the factors of 71043?
1, 3, 7, 17, 21, 51, 119, 199, 357, 597, 1393, 3383, 4179, 10149, 23681, 71043.
What is 71043 in binary?
10001010110000011 (hexadecimal 11583, octal 212603).
What is the square root of 71043?
About 266.5389.
Is 71043 divisible by 3?
Yes. Its digits add up to 15, a multiple of 3.
What is special about the number 71043?
It is a composite number with 16 divisors.