253 = 11 x 23.
253 has a unique representation as a sum of three squares: 253 = 32 + 102 + 122.
253 is the sum of three positive cubes: 253 = 53 + 43 + 43.
25 - 3 is a prime number.
253 is a star number. The nth star number is given by the formula 6n(n - 1) + 1.
NGC 253, also known as the Silver Coin Galaxy or the Sculptor Galaxy, is a large spiral galaxy in the constellation Sculptor.
25 - 3 is a prime number.
253 is a star number. The nth star number is given by the formula 6n(n - 1) + 1.
NGC 253, also known as the Silver Coin Galaxy or the Sculptor Galaxy, is a large spiral galaxy in the constellation Sculptor.
Source: Wikipedia
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