260 (number)

← 259 260 261 →
Cardinaltwo hundred sixty
Ordinal260th
(two hundred sixtieth)
Factorization22 × 5 × 13
Greek numeralΣΞ´
Roman numeralCCLX, cclx
Binary1000001002
Ternary1001223
Senary11126
Octal4048
Duodecimal19812
Hexadecimal10416

260 (two hundred [and] sixty) is the natural number following 259 and preceding 261.

In mathematics

260 is an abundant number,[1] an Ulam number,[2] and a member of the Moser-de Bruijn sequence.[3]

260 is the magic constant of the normal magic square of order 8.[4]

In other fields

Pre-Columbian Mesoamericans used 260-day calendars.[5]

References

  1. ↑ Sloane, N. J. A. (ed.). "Sequence A005101 (Abundant numbers)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
  2. ↑ Sloane, N. J. A. (ed.). "Sequence A002858 (Ulam numbers)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
  3. ↑ Sloane, N. J. A. (ed.). "Sequence A000695 (Moser-de Bruijn sequence)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
  4. ↑ Sloane, N. J. A. (ed.). "Sequence A006003". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
  5. ↑ Aldana, Gerardo. "Maya Calendar and Mesoamerican Astronomy". Encyclopedia of the History of Science. Carnegie Mellon University Libraries Publishing Service. Archived from the original on 31 May 2023. Retrieved 3 January 2025.


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