← 206 207 208 →
Cardinaltwo hundred seven
Ordinal207th
(two hundred seventh)
Factorization32 × 23
Divisors1, 3, 9, 23, 69, 207
Greek numeralΣΖ´
Roman numeralCCVII
Binary110011112
Ternary212003
Senary5436
Octal3178
Duodecimal15312
HexadecimalCF16

207 (two hundred [and] seven) is the natural number following 206 and preceding 208. It is an odd composite number with a prime factorization of .

In Mathematics

207 is a Wedderburn-Etherington number.[1] There are exactly 207 different matchstick graphs with eight edges.[2][3] 207 is also a deficient number, as 207's proper divisors (divisors not including the number itself) only add up to 105:

See also

References

  1. ^ Sloane, N. J. A. (ed.). "Sequence A001190 (Wedderburn-Etherington numbers)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
  2. ^ Sloane, N. J. A. (ed.). "Sequence A066951 (Number of nonisomorphic connected graphs that can be drawn in the plane using n unit-length edges)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
  3. ^ Salvia, Raffaele (2013). "A catalog for matchstick graphs". arXiv:1303.5965 [math.CO].


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