Number 261

Representations of 261
Greek numeral
σξαʹ
Arabic numeral
٢٦١
Roman numeral
CCLXI
Maya numeral
●●●
▃▃▃▃▃
▃▃▃▃▃
●
Chinese numeral
二百六十一
Hebrew numeral
רסא
261 in different numeral systems
Binary
100000101
Base-3
100200
Base-4
10011
Base-5
2021
Base-6
1113
Base-7
522
Base-8
405
Duodecimal
199
Hex
105
Vigesimal
d1
Base-24
al
Base-36
79
Negabinary
100000101
Factorization
Prime factors
3, 29
Divisors
1, 3, 9, 29, 87, 261
Sum of divisors other than 261
129
Product of prime factors
261 = 3 x 3 x 29
Characteristics
Nonagonal Difference of 2 squares Harshad Odd Composite Deficient
Related primes
Number 261 prime
1663
Prime number before 261
257
Prime number after 261
263