Number 1

Interestingness: 68 · Rank #1 of 1000

Visual representations

Binary image (n×n bits)
Element H – Hydrogen
Triangular · P3(1) = 1
Pentagonal · P5(1) = 1
Hexagonal · P6(1) = 1
Heptagonal · P7(1) = 1
Octogonal · P8(1) = 1
Nonagonal · P9(1) = 1
Decagonal · P10(1) = 1
Square · P4(1) = 1
1
Prime factorization

Representations of 1

Greek numeral
αʹ
Sanskrit numeral
१
Arabic numeral
١
Roman numeral
I
Maya numeral
●
Chinese numeral
一
Hebrew numeral
א
Egyptian numeral
𓏹
Morse code
.----

1 in different numeral systems

Binary
1
Base-3
1
Base-4
1
Base-5
1
Base-6
1
Base-7
1
Base-8
1
Duodecimal
1
Hex
1
Vigesimal
1
Base-24
1
Base-36
1
Negabinary
1

Factorization

Divisors: 1
Sum of divisors other than 1: 0

Number-theory characteristics (25)

Triangular Pentagonal Hexagonal Heptagonal Octogonal Nonagonal Decagonal Square Cubic Fourth Power Fifth Power Difference of 2 squares Odious number Factorial Lucas number Catalan number Refactorable Powerful number Mersenne One O Odd Fibonacci Ones-Zeroes Unit Deficient

Base-10 digit properties (13)

These depend on the decimal representation of the number.

Palindromic Harshad Kaprekar Repdigit Repunit Automorphic Spy number Happy number Narcissistic Strobogrammatic Trimorphic Dudeney number Zuckerman number

Related primes

Number 1 prime