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200 (number)

From Simple English Wikipedia, the free encyclopedia
← 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

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

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.