The number 80429
80429 is the 7873rd prime number. Its only divisors are 1 and 80429.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 80429: the 7873rd prime number.
- 2
80429 is prime, so its only factors are 1 and 80429. It is the 7873rd prime; the next prime is 80447 and the one before is 80407.
- 3
The divisors add up to 80430; without 80429 itself that is 1, so 80429 is deficient (1 is less than 80429). Euler's totient φ(80429) = 80428 numbers up to 80429 share no factor with it.
- 4
The digits of 80429 add up to 23, and repeating that until one digit is left gives the digital root 5. The Collatz sequence (halve if even, else 3n+1) takes 120 steps to reach 1.
80429 at a glance
| Property | Value |
|---|---|
| Type | prime |
| Number of divisors | 2 |
| Sum of divisors | 80430 |
| Euler totient φ(n) | 80428 |
| Square | 6468824041 |
| Cube | 520281048793589 |
| Square root | 283.600071 |
| Digit sum / digital root | 23 / 5 |
| Collatz steps to 1 | 120 |
| Scientific notation | 8.0429 × |
80429 in other forms
| Form | Value |
|---|---|
| In words | eighty thousand four hundred and twenty-nine |
| Binary (base 2) | 10011101000101101 |
| Octal (base 8) | 235055 |
| Hexadecimal (base 16) | 13A2D |
| Base 3 | 11002022212 |
| As time | 80429 seconds = 22 h 20 min 29 s |
Is 80429 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 1) | A number is divisible by 4 if the last two digits make a multiple of 4. |
| 5 | No (remainder 4) | 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 5) | 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 9) | 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 5) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 80429 a prime number?
Yes. 80429 is divisible only by 1 and itself.
What are the factors of 80429?
1, 80429.
What is 80429 in binary?
10011101000101101 (hexadecimal 13A2D, octal 235055).
What is the square root of 80429?
About 283.6001.
Is 80429 divisible by 3?
No. Its digits add up to 23, which is not a multiple of 3.
What is special about the number 80429?
80429 is the 7873rd prime number.