Monday, September 28, 2009

201

201 = 3 x 67.

201n + 2 is a prime number, for n = 14, 15, and 16.

The square of
201 is one of four square numbers using the same digits: 1022 = 10404, 1202 = 14400, 2012 = 40401, and 2102 = 44100.

201 is a Niven (or Harshad) number, which is divisible by the sum of its digits.


201 Penelope is a large asteroid discovered in 1879.

Source:
Prime Curios!
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