Talk:Lucky number

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The entire article (including the References) has been copied word-for-word from the following link - AbsoulteAstronomy.com. I am not sure if it violates the copyrights or not. --Bhuvan 17:15, 11 May 2005 (UTC)

Go check out the bottom of the page you linked there. Notice removed. --SomeoneWhoCanRead

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13's a lucky number?

[edit] Infinite Primes

Article states at the end: "There are infinitely many lucky numbers. It is not known whether there are also infinitely many lucky primes..."

Haven't done maths for 20 years but there must be an infinite number of lucky primes, isn't that right?

82.213.248.138 20:06, 6 November 2005 (UTC)El Choco

No, we actually can't tell from that statement. For example, we could also say: "There are infinitely many even numbers. It is not known whether there are also infinitely many even primes" (where I have simply replaced "lucky" with "even"). My statement is clearly not true, since there is only one even prime. The two categories are almost completely disjoint. Just because there are an infinite number of prime numbers and an infinite number of lucky numbers doesn't mean that there are an infinite number of lucky primes. N Shar 02:13, 13 October 2006 (UTC)

[edit] Poorly-explained algorithm

It seems like this could be described more clearly. As it is, the even-number-removing step seems out of place. Something like this, maybe?

 for n=2 to infinity, do
   let x = the nth number of the current list;
   remove every xth number from the current list;

Rob* 07:00, 5 April 2006 (UTC)

[edit] Lack of citation

This claim is easy to find verbatim on the internet, but I can't find any more information, does somebody have a more precise year, or possibly details about the story? "Stanisław Ulam was the first to discuss these numbers, around 1955. He named them "lucky" because of a connection with a story told by the historian Josephus."