495 (number)
Natural number
From Wikipedia, the free encyclopedia
495 (four hundred [and] ninety-five) is the natural number following 494 and preceding 496.
Cardinalfour hundred ninety-five
Ordinal495th
(four hundred ninety-fifth)
(four hundred ninety-fifth)
Factorization32 × 5 × 11
Greek numeralΥϞΕ´
| ||||
|---|---|---|---|---|
| Cardinal | four hundred ninety-five | |||
| Ordinal | 495th (four hundred ninety-fifth) | |||
| Factorization | 32 × 5 × 11 | |||
| Greek numeral | ΥϞΕ´ | |||
| Roman numeral | CDXCV, cdxcv | |||
| Binary | 1111011112 | |||
| Ternary | 2001003 | |||
| Senary | 21436 | |||
| Octal | 7578 | |||
| Duodecimal | 35312 | |||
| Hexadecimal | 1EF16 | |||
Mathematics
The Kaprekar's routine algorithm is defined as follows for three-digit numbers:
- Take any three-digit number, other than repdigits such as 111. Leading zeros are allowed.
- Arrange the digits in descending and then in ascending order to get two three-digit numbers, adding leading zeros if necessary.
- Subtract the smaller number from the bigger number.
- Go back to step 2 and repeat.
Repeating this process will always reach 495 in a few steps. Once 495 is reached, the process stops because 954 – 459 = 495.
The number 6174 has the same property for the four-digit numbers, albeit has a much greater percentage of workable numbers.[1]
See also
- Collatz conjecture — sequence of unarranged-digit numbers always ends with the number 1.