207 (number)

← 206 207 208 →
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Cardinal two hundred seven
Ordinal 207th
(two hundred seventh)
Factorization 32× 23
Divisors 1, 3, 9, 23, 69, 207
Greek numeral ΣΖ´
Roman numeral CCVII
Binary 110011112
Ternary 212003
Quaternary 30334
Quinary 13125
Senary 5436
Octal 3178
Duodecimal 15312
Hexadecimal CF16
Vigesimal A720
Base 36 5R36

207 (two hundred [and] seven) is the natural number following 206 and preceding 208.

It is a Wedderburn-Etherington number.[1] There are exactly 207 different matchstick graphs with eight edges.[2][3]

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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