The number 80

Representation numerals

Greek numeral

π

Arabic numeral

٨٠

Roman numeral

LXXX

Maya numeral

●●●●

Chinese numeral

八十

Hebrew numeral

פ
Numeral systems
Binary: 1010000
Septimal (base 7): 143
Octal: 120
Hexadecimal: 50
Base 24: 38
Factorization
80 = 2 × 2 × 2 × 2 × 5
80 has 10 divisors: 1, 2, 4, 5, 8, 10, 16, 20, 40, 80
Sum of all divisors other than 80: 106
Sums & differences
Sum of 2 squares: 80 = 82 + 42
Difference of 2 squares: 80 = 122 - 82 = 212 - 192
Goldbach conjecture: 80 = 73 + 7 = 67 + 13 = 61 + 19 = 43 + 37
Characteristics
Related primes
The 80th prime number is: 409
Previous prime number: 79 — Next prime number: 83
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