The number 3149
3149 is a composite number with 4 divisors. Its prime factorisation is 47 × 67. Divisors (4): 1, 47, 67, 3149.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 3149: a semiprime: 47 × 67, the product of two primes.
- 2
3149 is composite. Its prime factorisation is
- 3
The divisors add up to 3264; without 3149 itself that is 115, so 3149 is deficient (115 is less than 3149). Euler's totient φ(3149) = 3036 numbers up to 3149 share no factor with it.
- 4
The digits of 3149 add up to 17, and repeating that until one digit is left gives the digital root 8. The Collatz sequence (halve if even, else 3n+1) takes 61 steps to reach 1.
LaTeX source of the formulas on this page
\[ 3149 = 47 \times 67 \]
3149 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 3264 |
| Euler totient φ(n) | 3036 |
| Square | 9916201 |
| Cube | 31226116949 |
| Square root | 56.115951 |
| Digit sum / digital root | 17 / 8 |
| Collatz steps to 1 | 61 |
| Scientific notation | 3.149 × |
3149 in other forms
| Form | Value |
|---|---|
| In words | three thousand one hundred and forty-nine |
| Roman numerals | MMMCXLIX |
| Binary (base 2) | 110001001101 |
| Octal (base 8) | 6115 |
| Hexadecimal (base 16) | C4D |
| Base 3 | 11022122 |
| As time | 3149 seconds = 52 min 29 s |
Is 3149 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 8) | 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 3) | 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 3149 a prime number?
No. 3149 = 47 × 67, so it is divisible by 47.
What are the factors of 3149?
1, 47, 67, 3149.
What is 3149 in binary?
110001001101 (hexadecimal C4D, octal 6115).
What is the square root of 3149?
About 56.1160.
What is 3149 in Roman numerals?
MMMCXLIX.
Is 3149 divisible by 3?
No. Its digits add up to 17, which is not a multiple of 3.
What is special about the number 3149?
3149 is a semiprime: 47 × 67, the product of two primes.