193 (one hundred
ndninety-three) is the
natural number
In mathematics, the natural numbers are those numbers used for counting (as in "there are ''six'' coins on the table") and ordering (as in "this is the ''third'' largest city in the country").
Numbers used for counting are called '' cardinal ...
following
192 and preceding
194.
In mathematics
193 is a
prime number
A prime number (or a prime) is a natural number greater than 1 that is not a Product (mathematics), product of two smaller natural numbers. A natural number greater than 1 that is not prime is called a composite number. For example, 5 is prime ...
, and a
Pierpont prime
In number theory, a Pierpont prime is a prime number of the form
2^u\cdot 3^v + 1\,
for some nonnegative integers and . That is, they are the prime numbers for which is 3-smooth. They are named after the mathematician James Pierpont, who us ...
, implying that a 193-gon can be constructed using a compass, straightedge, and
angle trisector. It is the only odd prime
known for which 2 is not a
primitive root of
. It is the number of compositions of 14 into distinct parts.
It is also part of the prime quadruplet (191, 193, 197, 199).
See also
*
193 (disambiguation) 193 A.D. is a year.
193 may also refer to:
* 193 Ambrosia
* Connecticut Route 193
* Maryland Route 193
* West Virginia Route 193
* Alabama State Route 193
* California State Route 193
* Ohio State Route 193
* Georgia State Route 193
* Maine S ...
References
{{DEFAULTSORT:193 (Number)
Integers