The number 281

Representation numerals

Greek numeral

σπαʹ

Arabic numeral

٢٨١

Roman numeral

CCLXXXI

Maya numeral

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Chinese numeral

二百八十一

Hebrew numeral

רפא
Numeral systems
Binary: 100011001
Septimal (base 7): 551
Octal: 431
Hexadecimal: 119
Base 24: BH
Factorization
281 is a prime number
Sums & differences
281 is the sum of the first 14 prime numbers: 281 = 2 + 3 + 5 + 7 + 11 + 13 + 17 + 19 + 23 + 29 + 31 + 37 + 41 + 43
Sum of 2 squares: 281 = 162 + 52
Difference of 2 squares: 281 = 1412 - 1402
Characteristics
Related primes
The 281th prime number is: 1823
Previous prime number: 277 — Next prime number: 283
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