The number 16043
16043 is a composite number with 4 divisors. Its prime factorisation is 61 × 263. Divisors (4): 1, 61, 263, 16043.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 16043: a semiprime: 61 × 263, the product of two primes.
- 2
16043 is composite. Its prime factorisation is
- 3
The divisors add up to 16368; without 16043 itself that is 325, so 16043 is deficient (325 is less than 16043). Euler's totient φ(16043) = 15720 numbers up to 16043 share no factor with it.
- 4
The digits of 16043 add up to 14, and repeating that until one digit is left gives the digital root 5. The Collatz sequence (halve if even, else 3n+1) takes 71 steps to reach 1.
LaTeX source of the formulas on this page
\[ 16043 = 61 \times 263 \]
16043 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 16368 |
| Euler totient φ(n) | 15720 |
| Square | 257377849 |
| Cube | 4129112831507 |
| Square root | 126.660965 |
| Digit sum / digital root | 14 / 5 |
| Collatz steps to 1 | 71 |
| Scientific notation | 1.6043 × |
16043 in other forms
| Form | Value |
|---|---|
| In words | sixteen thousand and forty-three |
| Binary (base 2) | 11111010101011 |
| Octal (base 8) | 37253 |
| Hexadecimal (base 16) | 3EAB |
| Base 3 | 211000012 |
| As time | 16043 seconds = 4 h 27 min 23 s |
Is 16043 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 2) | 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 5) | 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 5) | 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 11) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 16043 a prime number?
No. 16043 = 61 × 263, so it is divisible by 61.
What are the factors of 16043?
1, 61, 263, 16043.
What is 16043 in binary?
11111010101011 (hexadecimal 3EAB, octal 37253).
What is the square root of 16043?
About 126.6610.
Is 16043 divisible by 3?
No. Its digits add up to 14, which is not a multiple of 3.
What is special about the number 16043?
16043 is a semiprime: 61 × 263, the product of two primes.