172 (number)

← 171 172 173 →
Cardinalone hundred seventy-two
Ordinal172nd
(one hundred seventy-second)
Factorization22 × 43
Divisors1, 2, 4, 43, 86, 172
Greek numeralΡΟΒ´
Roman numeralCLXXII
Binary101011002
Ternary201013
Senary4446
Octal2548
Duodecimal12412
HexadecimalAC16

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

In mathematics

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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

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  1. ^ Sloane, N. J. A. (ed.). "Sequence A050787". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
  2. ^ Sloane, N. J. A. (ed.). "Sequence A050492 (Thickened cube numbers)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.