The number 643

Representation numerals

Greek numeral

χμγʹ

Arabic numeral

٦٤٣

Roman numeral

DCXLIII

Maya numeral

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Chinese numeral

六百四十三

Hebrew numeral

תרמג
Numeral systems
Binary: 1010000011
Septimal (base 7): 1606
Octal: 1203
Hexadecimal: 283
Base 24: 12J
Factorization
643 is a prime number (Gaussian prime)
Sums & differences
Difference of 2 squares: 643 = 3222 - 3212
Characteristics
Related primes
The 643th prime number is: 4787
Previous prime number: 641 — Next prime number: 647

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