Wednesday, October 27, 2010

140

140 = 22 x 5 x 7.

140 has a unique representation as a sum of three squares: 140 = 22 + 62 + 102.

140 is a square pyramidal number. It is the sum of the first seven squares: 140 = 12 + 22 + 32 + 42 + 52 + 62 + 72.


140 Siwa is a large, dark asteroid discovered in 1874.

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