Tuesday, February 4, 2014

2340

2340 = 2 x 2 x 3 x 3 x 5 x 13.

2340 is 100100100100 in base 2 (binary) (A033138 and A020330). It is 4444 in base 8 and 210210 in base 4.

2340 is the number of ways of dissecting a polygon into 7 hexagons (A005038).

2340!!!!! - 1 is a prime number (A085149).

2340 is the sum of the divisors of 103 (A046915).

2340 has two representations as a sum of two squares: 2340 = 62 + 482 = 242 + 422.

2340 divides 613 - 1.


2340 is a year in which there are five Thursdays in the month of February (A143995).

Source: On-Line Encyclopedia of Integer Sequences

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