200 (number)

natural number

200 (two hundred) is the natural number after 199 and before 201.

← 199 200 201 →
Cardinaltwo hundred
Ordinal200th
(two hundredth)
Factorization23× 52
Divisors1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 200
Greek numeralΣ´
Roman numeralCC
Binary110010002
Ternary211023
Quaternary30204
Quinary13005
Senary5326
Octal3108
Duodecimal14812
HexadecimalC816
VigesimalA020
Base 365K36

It is the smallest unprimeable number because changing only one of the digits will still result in a composite number.

  • If we change the first digit to any other digit, we get numbers like 100, 300, 400, and so on. None of these are prime numbers.
  • If we change the second digit to any other digit, we get numbers like 210, 220, 230, and so on. None of these are prime numbers.
  • If we change the third digit to any other digit, we get numbers like 201, 202, 203, 204, 205, 206, 207, 208, and 209. Yet again, none of these are prime numbers.