172 (number)

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← 171 172 173 →
Cardinal one hundred seventy-two
Ordinal 172nd
(one hundred seventy-second)
Factorization 22 × 43
Divisors 1, 2, 4, 43, 86, 172
Greek numeral ΡΟΒ´
Roman numeral CLXXII
Binary 101011002
Ternary 201013
Senary 4446
Octal 2548
Duodecimal 12412
Hexadecimal AC16

172 (one hundred [and] seventy-two) is the natural number following 171 and preceding 173.

Contents

In mathematics

172 is a part of a near-miss for being a counterexample to Fermat's last theorem, as 1353 + 1383 = 1723− 1. This is only the third near-miss of this form, two cubes adding to one less than a third cube. [1] It is also a "thickened cube number", half an odd cube (73 = 343) rounded up to the next integer. [2]

See also

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References

  1. ↑ Sloane, N. J. A. (ed.). "SequenceA050787". The On-Line Encyclopedia of Integer Sequences . OEIS Foundation.
  2. ↑ Sloane, N. J. A. (ed.). "SequenceA050492(Thickened cube numbers)". The On-Line Encyclopedia of Integer Sequences . OEIS Foundation.
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