260 (number)

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

← 259 260 261 →
← 260 261 262 263 264 265 266 267 268 269 → List of numbers Integers ← 0 100 200 300 400 500 600 700 800 900 →
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.

260 may also refer to the years AD 260 and 260 BC.