The Kaprekar Numbers hole will go live in 2 days. Why not try and solve it ahead of time?
ISBN in all languages in bytes. Cheevos Holes Recent Holes Langs Medals Misc gs All Holes 12 Days of Christmas 24 Game 99 Bottles of Beer Abundant Numbers Abundant Numbers (Long) Arabic to Roman Arithmetic Numbers Arrows Ascending Primes ASCII Table brainfuck Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz CSS Colors Cubes Day of Week DFA Simulator Diamonds Divisors Emirp Numbers Emirp Numbers (Long) Emojify Evil Numbers Evil Numbers (Long) Factorial Factorisation Farey Sequence Fibonacci Fizz Buzz Foo Fizz Buzz Bar Forsyth–Edwards Notation Fractions Game of Life Gijswijt’s Sequence Happy Numbers Happy Numbers (Long) Hexdump Intersection Inventory Sequence ISBN Jacobi Symbol Kolakoski Constant Kolakoski Sequence Leap Years Levenshtein Distance Leyland Numbers ln 2 Look and Say Lucky Numbers Lucky Tickets Mahjong Maze Medal Tally Morse Decoder Morse Encoder Musical Chords N Queens Niven Numbers Niven Numbers (Long) Number Spiral Odious Numbers Odious Numbers (Long) Ordinal Numbers PalindromemordnilaP Pangram Grep Pascal’s Triangle Pernicious Numbers Pernicious Numbers (Long) Poker Polyominoes Prime Numbers Prime Numbers (Long) Proximity Grid QR Decoder Quine Recamán Repeating Decimals Reverse Polish Notation Reversi Rijndael S-box Rock-paper-scissors-Spock-lizard Roman to Arabic Rule 110 Seven Segment SI Units Sierpiński Triangle Smith Numbers Spelling Numbers Star Wars Opening Crawl Sudoku Sudoku (Fill-in) Ten-pin Bowling Time Distance Tongue-twisters Transpose Sentence United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 All Languages ><> Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Crystal D Dart Elixir F# Factor Forth Fortran Go GolfScript Haskell Hexagony J Janet Java JavaScript jq Julia K Kotlin Lisp Lua Nim OCaml Pascal Perl PHP PowerShell Prolog Python R Raku Rockstar Ruby Rust Scheme sed SQL Swift Tcl TeX V VimL Wren Zig Bytes Chars Scoring Bytes Chars Language All ><> Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Crystal D Dart Elixir F# Factor Forth Fortran Go GolfScript Haskell Hexagony J Janet Java JavaScript jq Julia K Kotlin Lisp Lua Nim OCaml Pascal Perl PHP PowerShell Prolog Python R Raku Rockstar Ruby Rust Scheme sed SQL Swift Tcl TeX V VimL Wren Zig Hole All 12 Days of Christmas 24 Game 99 Bottles of Beer Abundant Numbers Abundant Numbers (Long) Arabic to Roman Arithmetic Numbers Arrows Ascending Primes ASCII Table brainfuck Card Number Validation Catalan Numbers Catalan’s Constant Christmas Trees Collatz CSS Colors Cubes Day of Week DFA Simulator Diamonds Divisors Emirp Numbers Emirp Numbers (Long) Emojify Evil Numbers Evil Numbers (Long) Factorial Factorisation Farey Sequence Fibonacci Fizz Buzz Foo Fizz Buzz Bar Forsyth–Edwards Notation Fractions Game of Life Gijswijt’s Sequence Happy Numbers Happy Numbers (Long) Hexdump Intersection Inventory Sequence ISBN Jacobi Symbol Kolakoski Constant Kolakoski Sequence Leap Years Levenshtein Distance Leyland Numbers ln 2 Look and Say Lucky Numbers Lucky Tickets Mahjong Maze Medal Tally Morse Decoder Morse Encoder Musical Chords N Queens Niven Numbers Niven Numbers (Long) Number Spiral Odious Numbers Odious Numbers (Long) Ordinal Numbers PalindromemordnilaP Pangram Grep Pascal’s Triangle Pernicious Numbers Pernicious Numbers (Long) Poker Polyominoes Prime Numbers Prime Numbers (Long) Proximity Grid QR Decoder Quine Recamán Repeating Decimals Reverse Polish Notation Reversi Rijndael S-box Rock-paper-scissors-Spock-lizard Roman to Arabic Rule 110 Seven Segment SI Units Sierpiński Triangle Smith Numbers Spelling Numbers Star Wars Opening Crawl Sudoku Sudoku (Fill-in) Ten-pin Bowling Time Distance Tongue-twisters Transpose Sentence United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 # Golfer Points Bytes Time 76th AdrienHache 925 110 21 Mar 2024 77th NewDefectus 🇮🇱 919 77 11 Jan 2022 77th dmrichwa 🇺🇸 919 77 27 Oct 2022 77th stefangabos 🇷🇴 919 77 19 May 2023 77th sebipopa 🇷🇴 919 77 22 May 2023 77th Shanethegamer 🇺🇸 919 77 4 Jul 2023 77th coreynash 919 77 19 Oct 2023 77th lukegustafson 🇺🇸 919 77 24 Jan 2024 84th AdrienHache 919 88 21 Mar 2024 85th JayXon 🇺🇸 918 59 25 Feb 2022 86th JayXon 🇺🇸 917 96 21 Jun 2024 87th JayXon 🇺🇸 916 64 22 Jun 2024 88th GrayJoKing 🇦🇺 914 64 17 Aug 2024 89th JayXon 🇺🇸 913 94 21 May 2023 90th ovs-code 🇩🇪 912 34 14 May 2024 91st SirBogman 🇺🇸 912 49 10 May 2022 91st ovs-code 🇩🇪 912 49 10 Feb 2023 93rd o0lit3 🇺🇸 911 51 11 Jan 2022 94th HPWiz 🇬🇧 909 59 28 Jun 2022 95th DialFrost 🇸🇬 909 66 18 days ago 96th JayXon 🇺🇸 909 144 15 Jan 2022 96th nwellnhof 🇩🇪 909 144 15 Jan 2022 96th primo-ppcg 🇹🇭 909 144 4 Apr 2022 96th Lydxn 🇨🇦 909 144 5 Apr 2022 96th rotary-o 🇯🇵 909 144 5 May 2023 96th MeWhenI 🇻🇦 909 144 9 Aug 2023 96th rucin93 🇵🇱 909 144 21 Nov 2023 96th sean-niemann 🇺🇸 909 144 28 Dec 2023 96th Steffan153 🇫🇮 909 144 24 Feb 2024 105th duckyluuk 🇳🇱 908 78 25 days ago 106th Shanethegamer 🇺🇸 908 93 13 Nov 2023 106th xsot 🇸🇬 908 93 11 Apr 2024 106th DialFrost 🇸🇬 908 93 28 Jul 2024 109th nwellnhof 🇩🇪 908 97 18 Jul 2023 109th Steffan153 🇫🇮 908 97 21 Jun 2024 109th ovs-code 🇩🇪 908 97 5 Jul 2024 112th Bubbler-4 906 48 15 Nov 2022 112th stackofbears 906 48 27 Dec 2023 114th Lydxn 🇨🇦 905 84 16 Jan 2024 115th Shanethegamer 🇺🇸 904 124 16 Jan 2022 115th lynn 904 124 16 Jan 2022 115th Sakisan 🇧🇪 904 124 12 Oct 2022 115th HPWiz 🇬🇧 904 124 31 Jan 2023 115th ovs-code 🇩🇪 904 124 13 May 2023 115th Lydxn 🇨🇦 904 124 3 Aug 2023 121st Lydxn 🇨🇦 903 86 26 Feb 2023 122nd Lydxn 🇨🇦 903 95 26 Feb 2023 122nd Steffan153 🇫🇮 903 95 9 Apr 2023 122nd GrayJoKing 🇦🇺 903 95 18 Jul 2024 122nd FlyingPenguin223 903 95 2 days ago 126th MeWhenI 🇻🇦 902 142 14 May 2023 127th canissimia 🇦🇶 900 74 13 Jul 2022 128th Shanethegamer 🇺🇸 900 124 27 Aug 2024 129th GrayJoKing 🇦🇺 898 83 6 Aug 2024 130th btnlq 898 98 10 Jan 2022 130th primo-ppcg 🇹🇭 898 98 13 Jan 2022 130th m-tkach 🇺🇦 898 98 18 Jul 2023 130th bizy-coder 898 98 25 Jul 2024 134th xnor-gate 897 125 11 Jan 2022 135th Shanethegamer 🇺🇸 897 146 20 Oct 2022 135th stefangimmillaro 897 146 22 Apr 2023 137th dcgjb 896 67 14 Feb 2024 138th jared-hughes 896 79 12 Jan 2022 138th ZakkkkAttackkkk 🇵🇭 896 79 9 Jun 2022 138th ovs-code 🇩🇪 896 79 29 Sep 2023 138th uttumuttu 🇫🇮 896 79 21 Dec 2023 138th neel11235813 896 79 25 Mar 2024 143rd JayXon 🇺🇸 894 85 23 Jan 2024 143rd pardouin 🇫🇷 894 85 26 Sep 2024 145th Waffle3z 894 96 11 Jan 2022 145th NickTheEASDude 🇺🇸 894 96 9 Apr 2024 147th JayXon 🇺🇸 894 135 11 Nov 2023 148th Shanethegamer 🇺🇸 893 87 20 Oct 2022 148th JayXon 🇺🇸 893 87 25 Oct 2022 148th Steffan153 🇫🇮 893 87 24 Feb 2024 Prev 76–150 of 1,261 Next