The number 7

Representation numerals

Greek numeral

ζʹ

Arabic numeral

٧

Roman numeral

VII

Maya numeral

●●
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Chinese numeral

Hebrew numeral

ז
Numeral systems
Binary: 111
Septimal (base 7): 10
Octal: 7
Hexadecimal: 7
Base 24: 7
Factorization
7 is a prime number (Gaussian prime)
Sums & differences
Difference of 2 squares: 7 = 42 - 32
Characteristics
7 is a heptagonal number
7 is a palindromic number in decimal system
7 is a palindromic number in binary system (111)
Related primes
The 7th prime number is: 17
Previous prime number: 5 — Next prime number: 11
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