163

163 (one hundred sixty-three) is a natural number that follows 162 and precedes 164. It is a prime number, the 38th prime, and it is odd. Its divisors are 1 and itself.

In various numeral systems, 163 is represented as 10100011 in binary, 243 in octal, and A3 in hexadecimal. These representations reflect standard base conversions used in computing and digital systems.

In calendar terms, the 163rd day of a common year is June 12, while in a leap year it is June 11. This places the date in the middle of the calendar year for most civil purposes.

163 is also the designation of a small number of astronomical objects, most notably the asteroid 163 Erigone, a main-belt asteroid discovered in 1876 by Johann Palisa and named after the figure Erigone from Greek mythology.

In Roman numerals, 163 is written as CLXIII. The use of CLXIII appears in historical inscriptions and documents where Roman numeral notation was employed.

Historically, 163 can refer to calendar years such as 163 AD or 163 BC, which correspond to different periods in the Roman Empire and the broader ancient world.

Overall, 163 is a prime, three-digit decimal number with standard representations in common numeral systems and relevance in calendar calculations, astronomy, and historical notation.

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