Thursday, March 24, 2011

628

628 = 22 x 157.

628 has a representation as sum of two squares: 628 = 122 + 222.

628 is 444 in base 12.

628 is the sum of the squares of four consecutive primes: 628 = 72 + 112 + 132 + 172.

The Indian astronomer and mathematician Brahmagupta wrote the mathematics book The Opening of the Universe in the year 628.

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