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14 February 2014

  • 23:1923:19, 14 February 2014 diff hist +1 10 (number) Changed erroneous "13" to "155" as an example of a semi-prime that is the sum of all the distinct prime numbers from its lower factor through its higher factor. See http://en.wikipedia.org/wiki/Talk:10_(number)#13_is_not_a_semi-prime.
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