The number 61003
61003 is a composite number with 4 divisors. Its prime factorisation is 53 × 1151. Divisors (4): 1, 53, 1151, 61003.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 61003: a semiprime: 53 × 1151, the product of two primes.
- 2
61003 is composite. Its prime factorisation is
- 3
The divisors add up to 62208; without 61003 itself that is 1205, so 61003 is deficient (1205 is less than 61003). Euler's totient φ(61003) = 59800 numbers up to 61003 share no factor with it.
- 4
The digits of 61003 add up to 10, and repeating that until one digit is left gives the digital root 1. The Collatz sequence (halve if even, else 3n+1) takes 86 steps to reach 1.
LaTeX source of the formulas on this page
\[ 61003 = 53 \times 1151 \]
61003 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 62208 |
| Euler totient φ(n) | 59800 |
| Square | 3721366009 |
| Cube | 227014490647027 |
| Square root | 246.987854 |
| Digit sum / digital root | 10 / 1 |
| Collatz steps to 1 | 86 |
| Scientific notation | 6.1003 × |
61003 in other forms
| Form | Value |
|---|---|
| In words | sixty-one thousand and three |
| Binary (base 2) | 1110111001001011 |
| Octal (base 8) | 167113 |
| Hexadecimal (base 16) | EE4B |
| Base 3 | 10002200101 |
| As time | 61003 seconds = 16 h 56 min 43 s |
Is 61003 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 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 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 3) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 1) | 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 8) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 7) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 61003 a prime number?
No. 61003 = 53 × 1151, so it is divisible by 53.
What are the factors of 61003?
1, 53, 1151, 61003.
What is 61003 in binary?
1110111001001011 (hexadecimal EE4B, octal 167113).
What is the square root of 61003?
About 246.9879.
Is 61003 divisible by 3?
No. Its digits add up to 10, which is not a multiple of 3.
What is special about the number 61003?
61003 is a semiprime: 53 × 1151, the product of two primes.