281 (number)

← 280 281 282 →
Cardinaltwo hundred eighty-one
Ordinal281st
(two hundred eighty-first)
Factorizationprime
Prime60th
Greek numeralΣΠΑ´
Roman numeralCCLXXXI
Binary1000110012
Ternary1011023
Senary11456
Octal4318
Duodecimal1B512
Hexadecimal11916

281 is the natural number following 280 and preceding 282. It is also a prime number.