Number 1661

Interestingness: 6

Visual representations

Binary image (n×n bits)
11151
Prime factorization

Representations of 1661

͵αχξαʹ
१६६१
١٦٦١
MDCLXI
●●●●
●●●

一千六百六十一
א׳ תרסא
𓆼
𓈖𓈖𓈖𓈖𓈖𓈖
𓎆𓎆𓎆𓎆𓎆𓎆
𓏹
.-----....-.....----

1661 in different numeral systems

Binary
11001111101
Base-3
Base-4
Base-5
Base-6
Base-7
Base-8
Duodecimal
b65
Hex
67d
Vigesimal
Base-24
2l5
Base-36
1a5
Negabinary
1101110001101

Factorization

Prime factors: 11, 151
Divisors: 1, 11, 151, 1661
Sum of divisors other than 1661: 163
Product of prime factors: 1661 = 11 × 151

Number-theory characteristics (5)

Difference of 2 squares Evil number Odd Composite Deficient

Base-10 digit properties (1)

These depend on the decimal representation of the number.

Palindromic

Related primes

Number 1661 prime
Prime number before 1661
Prime number after 1661