260 (number)
260 (two hundred [and] sixty) is the natural number following 259 and preceding 261.
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|---|---|---|---|---|
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| Cardinal | two hundred sixty | |||
| Ordinal | 260th (two hundred sixtieth) | |||
| Factorization | 22 × 5 × 13 | |||
| Greek numeral | ΣΞ´ | |||
| Roman numeral | CCLX | |||
| Binary | 1000001002 | |||
| Ternary | 1001223 | |||
| Senary | 11126 | |||
| Octal | 4048 | |||
| Duodecimal | 19812 | |||
| Hexadecimal | 10416 | |||
It is also the magic constant of the n×n normal magic square and n-queens problem for n = 8, the size of an actual chess board.
260 is also the magic constant of the Franklin magic square devised by Benjamin Franklin.
| 52 | 61 | 4 | 13 | 20 | 29 | 36 | 45 |
| 14 | 3 | 62 | 51 | 46 | 35 | 30 | 19 |
| 53 | 60 | 5 | 12 | 21 | 28 | 37 | 44 |
| 11 | 6 | 59 | 54 | 43 | 38 | 27 | 22 |
| 55 | 58 | 7 | 10 | 23 | 26 | 39 | 42 |
| 9 | 8 | 57 | 56 | 41 | 40 | 25 | 24 |
| 50 | 63 | 2 | 15 | 18 | 31 | 34 | 47 |
| 16 | 1 | 64 | 49 | 48 | 33 | 32 | 17 |
The minor diagonal gives 260, and in addition a number of combinations of two half diagonals of four numbers from a corner to the center give 260.
There are 260 days in the Mayan sacred calendar Tzolkin.
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