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fermatslibrary's profile
Fermat's Library
Fermat's Library
Fermat's Library
@fermatslibrary

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Fermat's Library

@fermatslibrary

A platform for illuminating academic papers. We publish an annotated paper every week. Our chrome extension for arXiv: https://fermatslibrary.com/librarian 

fermatslibrary.com
Joined September 2015

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    Fermat's Library‏ @fermatslibrary 6 Nov 2019
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    Kaprekar Numbers are numbers whose square in that base can be split into 2 parts that add up to the original number. An example: 45 is a Kaprekar number, because 45² = 2025 and 20 + 25 = 45pic.twitter.com/AHsGKIcN05

    6:19 AM - 6 Nov 2019
    • 1,318 Retweets
    • 5,153 Likes
    • Hari Mvs Sanjay oneninefive Cəfər Guhanath Rajendran Turing Hawking Ahmettt Cherodear Alexander AA.
    43 replies 1,318 retweets 5,153 likes
      1. New conversation
      2. Hamza Bouaaoui‏ @Scalenuts 6 Nov 2019
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        Replying to @fermatslibrary

        What are these numbers used for?

        3 replies 0 retweets 15 likes
      3. Simone Atzori‏ @SimoneAtzori73 6 Nov 2019
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        Replying to @Scalenuts @fermatslibrary

        To tweet 😀

        1 reply 1 retweet 49 likes
      4. End of conversation
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      2. lost in infinite‏ @mysticfurtive 8 Nov 2019
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        Replying to @PaulS14179 @princeofrsa @fermatslibrary

        99 and 4879 are not Kaprekar number. Correct series is 9, 45, 55,297, 703, 2223, 2728, 4950, 5050, 7272, 7777, 17344, 22222, 77778, 82656, 142857, 148149 etc

        0 replies 0 retweets 5 likes
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      2. handongxue‏ @likev 6 Nov 2019
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        Replying to @fermatslibrary

        随手写了段代码,输出 Kaprekar Numbers https://gist.github.com/likev/92a844251f7b44b246fc2476a7bbc61a …pic.twitter.com/uxIrSzcxVQ

        2 replies 7 retweets 30 likes
      3. isidoro ghezzi  ⚡️‏ @isidoroghezzi 7 Nov 2019
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        Replying to @likev @fermatslibrary

        part2 must be > 0

        0 replies 0 retweets 1 like
      4. End of conversation
      1. New conversation
      2. Mangesh‏ @TheIndianRed 6 Nov 2019
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        Replying to @fermatslibrary

        I think it will work for every 9,99,999,9999 and so on. An infinite series it seems!

        2 replies 0 retweets 4 likes
      3. Deven‏ @nanu_mufc 6 Nov 2019
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        Replying to @TheIndianRed @fermatslibrary

        Thanyacha Aryabhata.... Tekadicha to be precise 😬

        1 reply 0 retweets 2 likes
      4. 1 more reply
      1. Mash‏ @dgeeks 6 Nov 2019
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        Replying to @fermatslibrary

        Not relevant, but only 9 multiplication (^^;)pic.twitter.com/eICSyJmyvY

        1 reply 0 retweets 5 likes
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      2. ForDPeople‏ @BB94378526 6 Nov 2019
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        Replying to @fermatslibrary

        Based on this theory, 297 is not correct because there is a bias in the split. How do you add up 882 + 09 to obtain 297?

        2 replies 0 retweets 2 likes
      3. Sam‏ @sampllrd 6 Nov 2019
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        Replying to @BB94378526 @fermatslibrary

        There isn’t any bias in the split, the number of digits in each part doesn’t need to be equal. Or at least it can be split in one part of n digits and a second one of n-1 digits.

        1 reply 0 retweets 2 likes
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