The following discussion is an archived debate of the proposed deletion of the article below. Please do not modify it. Subsequent comments should be made on the appropriate discussion page (such as the article's talk page or in a deletion review). No further edits should be made to this page.

The result was no consensus. I hate closing AfD discussions this involved as no consensus but sometimes there is no consensus to be found. There are three positions with some degree of policy and guideline based support: keep, rename, and merge. Based on the spread with which each position is held and that there are legitimate guideline based reasons for each position so we cannot weight that spread away we end with a no consensus. I recommend no renomination, or similar process (e.g. MERGE), for at least three months (and six or months would not be out of order). Barkeep49 (talk) 02:00, 25 June 2020 (UTC)[reply]

43,112,609 (number)[edit]

43,112,609 (number) (edit | talk | history | protect | delete | links | watch | logs | views) – (View log · Stats)
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Is this number important independent of being a Mersenne prime exponent?? Georgia guy (talk) 15:39, 5 June 2020 (UTC)[reply]

Note: This discussion has been included in the list of Mathematics-related deletion discussions. Eumat114 formerly TLOM (Message) 15:45, 5 June 2020 (UTC)[reply]
1. Are there at least three unrelated interesting mathematical properties of this integer?
  • It is a Mersenne prime index (there are ony 51 known such numbers, and only 45 at the time of its discovery)
  • It was the largest such number at the time of its discovery (WP:NTEMP)
  • It is one of a pair of Mersenne prime indexes that are the closest together known (in percentage terms)
  • It is the degree of four of the twelve largest primitive binary trinomials over GF(2)
  • It is the largest of only eight numbers which are both Mersenne prime indexes and Sophie Germain primes (sequence A065406 in the OEIS)
2. Does this number have obvious cultural significance (e.g., as a lucky or unlucky number)?
3. Is it listed in a book such as David Wells's Dictionary of Curious and Interesting Numbers, or Jean-Marie De Koninck's Those Fascinating Numbers, or on Erich Friedman's "What's Special About This Number" webpage?
  • It is listed on page 406 of De Koninck's book. The Penguin Dictionary was last revised in 1997 so is too old to include it (discovered 2008), and Friedman's list is only for numbers below 10,000.
  • It appears in five places in Enciclopedia Matematică a Claselor de Numere Întregi (Mathematical Encyclopedia of Integer Classes).
Evidence for meeting GNG include,
  • There is a scholarly paper on the discovery of it and another number.
  • Numerous books published around the time of its discovery name it as the largest such number [1][2][3].
SpinningSpark 17:23, 5 June 2020 (UTC)[reply]
@Spinningspark: Passing mentions do not demonstrate notability. The (short) paper is just a high-level overview of the search for Mersenne numbers in general and mentions the two most recent (at the time of publication) ones found. This is insufficient for contributing to meeting WP:GNG. –Deacon Vorbis (carbon • videos) 18:34, 6 June 2020 (UTC)[reply]
Even putting that aside, the number that's notable here is 2^43,112,609-1, not the number 43,112,609. Eumat114 formerly TLOM (Message) 15:03, 7 June 2020 (UTC)[reply]
Relisted to generate a more thorough discussion and clearer consensus.
Please add new comments below this notice. Thanks, Sandstein 07:58, 13 June 2020 (UTC)[reply]
1. Are there at least three unrelated interesting mathematical properties of this integer?
The keyword here is unrelated. From the looks of the article and sources, a pretty clear no. Everything described rests on it being the exponent for M43,112,609, and notability is not inherited. Not that it would matter, because that number is only notable for being a Mersenne prime (one property) and it's not even the largest known. I don't see what else is so unique, interesting, or not obscure that would fulfill this criterion. Based on what I'm reading above, such reasoning could lead to almost any number (even arbitrarily large ones) being deemed notable and having an article written, and Wikipedia is not a directory of indiscriminate number trivia. Is 6,700,417 notable for being a factor of F5 and once-upon-a-time the largest known prime? Or 33,550,336 for being the first perfect number not known to the ancients and the first with multiple digits that sum to a perfect number (28)? The list goes on and on, even more easily with less obvious mathematical properties such as these trinomials; to be frank, I'm not entirely understanding some of the keep !votes above.
2. Does this number have obvious cultural significance (e.g., as a lucky or unlucky number)?
No. Anything not obvious pertaining to its discovery is already adequately summarized at GIMPS or Largest known prime number.
3. Is it listed in a book such as David Wells's Dictionary of Curious and Interesting Numbers, or Jean-Marie De Koninck's Those Fascinating Numbers, or on Erich Friedman's "What's Special About This Number" webpage?
I'm open to being proven wrong, but I think it highly unlikely that it would receive a nontrivial mention (i.e. outside a list of Mersenne exponents) or any mention at all, as there are millions of other numbers with "interesting" or "fascinating" properties. The line needs to be drawn somewhere, and I'm pretty sure this number does not uniquely cross it for a number of its size and nature. ComplexRational (talk) 20:53, 18 June 2020 (UTC)[reply]
Changing to move to 2^43112609 - 1 over redirect, delete 43,112,609 (number) as a redirect, and selective merge from there into Great Internet Mersenne Prime Search. See my comments below. ComplexRational (talk) 02:12, 24 June 2020 (UTC)[reply]
Yes, I'm very much with you on this (I !voted keep). It seems to me both sides are giving utterly good faith subjective opinions. I can understand why some people do not think the number is (sufficiently) interesting. What I find very puzzling is that they also by implication feel that in future other people shouldn't be allowed to read the article. I can't come close to understanding that.Thincat (talk) 10:10, 19 June 2020 (UTC)[reply]
I just feel that much of the stuff, if keepable, have been, or can be, adequately summarized in existing Wikipedia articles. The fact that it is a Mersenne index is established in Mersenne prime; the "remarkable" trivia on similarly-timed discoveries may or may not be included in Mersenne prime or GIMPS. That of primitive trinomials can potentially be listed as an application to Mersenne primes. That of being a Sophie Germain and Gaussian prime (which BTW is practically trivia) can be omitted. I shall write a draft describing how it might look like if it were to be merged, at Draft:Mersenne prime (modification). Eumat114 (Message) 11:17, 19 June 2020 (UTC)[reply]
Yes, I think that shoving trivia and near-trivia together to make something resembling an article does a disservice to the subject of Mersenne primes. It's not that I feel other people shouldn't be allowed to read the article; I just don't find that the article can live up to the standards that Wikipedia should try to embody, and its existence doesn't help anyone learn about mathematics. XOR'easter (talk) 21:54, 19 June 2020 (UTC)[reply]
I agree with XOR'easter. We shouldn't try to polish this up if it's still not notable—no amount of editing changes a subject's notability and keeping an article like this would raise serious questions and considerations about out notability standards. And one could argue that many (subjectively) interesting articles get deleted at AfD everyday because interestingness and aesthetics do not compensate for a lack of notability... nobody comments about people not being able (or technically allowed) to read those anymore. ComplexRational (talk) 13:18, 20 June 2020 (UTC)[reply]
Plus, as I said above whatever is useful in the article has been, or can be, captured in the article Mersenne prime. Eumat114 (Message) 13:28, 20 June 2020 (UTC)[reply]
While I appreciate the ping, I am not particularly familiar with math-related notability, and as this is a very borderline case I'm going to refrain from !voting. All the best, Eddie891 Talk Work 12:16, 19 June 2020 (UTC)[reply]
under-appreciated joke collapsed
  • From what I know, 43112609 is expected to be the atomic number of Quadtriununbihexnilennium, or as we call it, Unobtanium. If you can synthesize it, by all means please do so. Jews, like everyone else, would have become a fossil by age 43,112,609.[citation needed] The "completeness" argument makes much sense -- what would one think of Wikipedia if the number 83 is not covered? Anything at most 2 digits long are bound to have some culturally significant facts with it. Doesn't apply to 43,112,609, especially since its destination is what the reader expects. Eumat114 (Message) 09:44, 23 June 2020 (UTC)[reply]
Thank you. Eumat114 (Message) 01:47, 24 June 2020 (UTC)[reply]
@Eumat114: Of the two, I'd rather keep 2^43112609 - 1 as a redirect, since that is the number with the more interesting property and that was formerly the largest known prime. So as an alternative to deletion, I would now recommend:
  1. Move over redirect to 2^43112609 - 1 (an admin needs to do this, but it was never a content page)—after all, it seems the focus is really this number,
  2. Delete the resulting redirect at 43,112,609 (number) per my comments above and the old RfDs (attribution would not be a problem at this point, and with another redirect in place, this would be an otherwise insignificant 8-digit number), and
  3. Merge the new content at 2^43112609 - 1 to Great Internet Mersenne Prime Search or another suitable target (this redirect would make more sense), per most of the merge !votes above.
I'm striking my delete !vote in favor of these three steps. I feel this addresses everyone's concerns about notability, the resultant redirect, and attribution of the current article's sourced content. Thoughts? ComplexRational (talk) 02:12, 24 June 2020 (UTC)[reply]
You asked me this question directly earlier. My apologies for not answering, but I felt discussing the title was unnecessarily complicating an already difficult AfD. The primary role of the AfD is to decide whether to keep the page. Naming could have been discussed later, but as we are having the discussion, here is my opinion. I favour moving to 43112609. That is, without the separators or disambiguator. Firstly, because "2^43112609 - 1" is a poor search term. A user looking explicitly for the Mersenne number is much more likely to type M43112609 which could be a redirect. "2^43112609 - 1" is not proper maths notation; it is how expressions are represented in some coding languages and an informal way of typing in text only files. We shouldn't have such ghastliness in a Wikipedia title. Secondly, 43112609 has some properties other than being a Mersenne index – the trinomial property and some other minor stuff which would be off topic in a Mersenne number article. SpinningSpark 08:38, 24 June 2020 (UTC)[reply]
I can’t see the purpose in replacing “43112609” with "2^43112609 - 1", which is a more obscure search term? Thanks. Britishfinance (talk) 09:42, 24 June 2020 (UTC)[reply]
M43112609 would also be a suitable place to relocate the history. I advocate a replacement because the notability of 43,112,609 is inherited from the Mersenne prime, and not notable in itself. It may be more obscure, but it (or M43112609) is more correct than 43,112,609 given the content and the nature of the "interesting" property. ComplexRational (talk) 15:44, 24 June 2020 (UTC)[reply]
The above discussion is preserved as an archive of the debate. Please do not modify it. Subsequent comments should be made on the appropriate discussion page (such as the article's talk page or in a deletion review). No further edits should be made to this page.