The number 71041
71041 is a composite number with 4 divisors. Its prime factorisation is 19 × 3739. Divisors (4): 1, 19, 3739, 71041.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 71041: a semiprime: 19 × 3739, the product of two primes.
- 2
71041 is composite. Its prime factorisation is
- 3
The divisors add up to 74800; without 71041 itself that is 3759, so 71041 is deficient (3759 is less than 71041). Euler's totient φ(71041) = 67284 numbers up to 71041 share no factor with it.
- 4
The digits of 71041 add up to 13, and repeating that until one digit is left gives the digital root 4. The Collatz sequence (halve if even, else 3n+1) takes 73 steps to reach 1.
LaTeX source of the formulas on this page
\[ 71041 = 19 \times 3739 \]
71041 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 74800 |
| Euler totient φ(n) | 67284 |
| Square | 5046823681 |
| Cube | 358531401121921 |
| Square root | 266.535176 |
| Digit sum / digital root | 13 / 4 |
| Collatz steps to 1 | 73 |
| Scientific notation | 7.1041 × |
71041 in other forms
| Form | Value |
|---|---|
| In words | seventy-one thousand and forty-one |
| Binary (base 2) | 10001010110000001 |
| Octal (base 8) | 212601 |
| Hexadecimal (base 16) | 11581 |
| Base 3 | 10121110011 |
| As time | 71041 seconds = 19 h 44 min 1 s |
Is 71041 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 1) | A number is divisible by 4 if the last two digits make a multiple of 4. |
| 5 | No (remainder 1) | 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 5) | 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 1) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 4) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 1) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 3) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 1) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 71041 a prime number?
No. 71041 = 19 × 3739, so it is divisible by 19.
What are the factors of 71041?
1, 19, 3739, 71041.
What is 71041 in binary?
10001010110000001 (hexadecimal 11581, octal 212601).
What is the square root of 71041?
About 266.5352.
Is 71041 divisible by 3?
No. Its digits add up to 13, which is not a multiple of 3.
What is special about the number 71041?
71041 is a semiprime: 19 × 3739, the product of two primes.