Kaprekar Numbers in all languages in bytes. Achievements Cheevos Holes Languages Medals Miscellaneous 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 Billiards brainfuck Calendar 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 Hilbert Curve Intersection Inventory Sequence ISBN Jacobi Symbol Kaprekar Numbers Kolakoski Constant Kolakoski Sequence Leap Years Levenshtein Distance Leyland Numbers ln 2 Look and Say Lucky Numbers Lucky Tickets Mahjong Mandelbrot Maze Medal Tally Minesweeper Morse Decoder Morse Encoder Multitap Input Musical Chords N Queens Niven Numbers Niven Numbers (Long) Number Spiral Odious Numbers Odious Numbers (Long) Ordinal Numbers PalindromemordnilaP Pangram Grep Partition Numbers 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 ROT13 Rule 110 Scrambled Sort Set Seven Segment SI Units Sierpiński Triangle Smith Numbers Spelling Numbers Star Wars GPT Star Wars Opening Crawl Sudoku Sudoku (Fill-in) Ten-pin Bowling Tic-tac-toe Time Distance Tongue-twisters Topological Sort Tower of Hanoi Transpose Sentence Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Apéry’s Constant Binary Lambda Calculus Connect Four Continued Fractions Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial All Languages ><> ALGOL 68 Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir Erlang F# Factor Forth Fortran Gleam Go GolfScript Groovy Haskell Hexagony J Janet Java JavaScript jq Julia K Kotlin Lua Nim OCaml Pascal Perl PHP PowerShell Prolog Python R Raku Rockstar Ruby Rust Scheme sed SQL Swift Tcl TeX V VimL Wren Zig 05AB1E APL ArkScript Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Lily Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Bytes Chars Scoring Bytes Chars Language All ><> ALGOL 68 Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir Erlang F# Factor Forth Fortran Gleam Go GolfScript Groovy Haskell Hexagony J Janet Java JavaScript jq Julia K Kotlin Lua Nim OCaml Pascal Perl PHP PowerShell Prolog Python R Raku Rockstar Ruby Rust Scheme sed SQL Swift Tcl TeX V VimL Wren Zig Experimental Language 05AB1E APL ArkScript Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Lily Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal 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 Billiards brainfuck Calendar 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 Hilbert Curve Intersection Inventory Sequence ISBN Jacobi Symbol Kaprekar Numbers Kolakoski Constant Kolakoski Sequence Leap Years Levenshtein Distance Leyland Numbers ln 2 Look and Say Lucky Numbers Lucky Tickets Mahjong Mandelbrot Maze Medal Tally Minesweeper Morse Decoder Morse Encoder Multitap Input Musical Chords N Queens Niven Numbers Niven Numbers (Long) Number Spiral Odious Numbers Odious Numbers (Long) Ordinal Numbers PalindromemordnilaP Pangram Grep Partition Numbers 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 ROT13 Rule 110 Scrambled Sort Set Seven Segment SI Units Sierpiński Triangle Smith Numbers Spelling Numbers Star Wars GPT Star Wars Opening Crawl Sudoku Sudoku (Fill-in) Ten-pin Bowling Tic-tac-toe Time Distance Tongue-twisters Topological Sort Tower of Hanoi Transpose Sentence Trinomial Triangle United States Vampire Numbers Van Eck Sequence Zeckendorf Representation Zodiac Signs γ λ π τ φ √2 𝑒 Experimental Hole Apéry’s Constant Binary Lambda Calculus Connect Four Continued Fractions Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Gray Code Decoder Gray Code Encoder Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Bytes Time Submitted 799th CaedenHarper 🇨🇦 155 509 37ms 22 Jan 2025 799th JOrE20 155 509 38ms 18 days ago 803rd KatieLG 🇬🇧 155 510 36ms 1 Nov 2024 804th KatieLG-Transpiler 🇬🇧 155 531 111ms 9 Jan 2026 805th Kokusui 🇯🇵 154 434 4ms 19 Nov 2024 806th HumanoidCPU 154 454 67ms 1 Nov 2024 806th dokutan 154 454 66ms 1 Nov 2024 806th CaedenHarper 🇨🇦 154 454 64ms 16 Aug 2025 809th snoozingnewt 🇨🇦 154 476 2,231ms 27 Sep 2025 810th KatieLG-Transpiler 🇬🇧 154 511 36ms 9 Jan 2026 811th JunkIce 153 449 9ms 21 Nov 2024 812th HumanoidCPU 152 448 100ms 1 Nov 2024 812th dokutan 152 448 99ms 1 Nov 2024 812th Shanethegamer 🇺🇸 152 448 100ms 1 Nov 2024 812th MeWhenI 🇻🇦 152 448 98ms 2 Nov 2024 812th CaedenHarper 🇨🇦 152 448 93ms 16 Aug 2025 817th HumanoidCPU 152 452 10ms 1 Nov 2024 817th GolfingSuccess 🇬🇷 152 452 10ms 1 Nov 2024 817th zbreit 🇺🇸 152 452 10ms 1 Nov 2024 817th Shanethegamer 🇺🇸 152 452 10ms 1 Nov 2024 817th madex 🇩🇪 152 452 10ms 1 Nov 2024 817th jtaxen 152 452 10ms 1 Nov 2024 817th Stockoh 🇫🇷 152 452 9ms 4 Nov 2024 817th evan18c 152 452 10ms 7 Nov 2024 817th roguh 🇬🇹 152 452 9ms 27 Nov 2024 817th mathisfun271 152 452 10ms 25 Jan 2025 817th moustave 152 452 10ms 9 Apr 2025 817th SectorCorruptor 152 452 10ms 24 Jul 2025 817th vgamula 🇺🇦 152 452 11ms 25 Jul 2025 817th Unknownuserfrommars 152 452 10ms 5 Aug 2025 817th JOrE20 152 452 10ms 6 Nov 2025 832nd Shanethegamer 🇺🇸 151 443 4ms 8 May 2025 833rd Shanethegamer 🇺🇸 151 450 798ms 16 Apr 2025 833rd KatieLG 🇬🇧 151 450 841ms 20 Apr 2025 833rd dokutan 151 450 877ms 23 Jul 2025 833rd HumanoidCPU 151 450 820ms 18 Aug 2025 833rd MeWhenI 🇻🇦 151 450 839ms 15 Sep 2025 838th HumanoidCPU 150 445 5ms 1 Nov 2024 838th dokutan 150 445 4ms 1 Nov 2024 838th MeWhenI 🇻🇦 150 445 4ms 2 Nov 2024 838th fischfood 150 445 4ms 8 Nov 2024 838th CaedenHarper 🇨🇦 150 445 4ms 16 Aug 2025 843rd HumanoidCPU 150 448 1ms 1 Nov 2024 843rd Shanethegamer 🇺🇸 150 448 1ms 1 Nov 2024 843rd koipondx86 150 448 1ms 1 Nov 2024 843rd MeWhenI 🇻🇦 150 448 1ms 2 Nov 2024 843rd CaedenHarper 🇨🇦 150 448 1ms 16 Aug 2025 848th KasperKivimaeki 🇫🇮 150 457 10ms 15 Jul 2025 849th muser-logiccpu 🇺🇦 150 458 9ms 9 Aug 2025 849th netfri25 🇮🇱 150 458 11ms 7 hours ago 849th rotemkm 150 458 10ms 7 hours ago 852nd KatieLG-Transpiler 🇬🇧 150 538 419ms 9 Jan 2026 853rd Unknownuserfrommars 150 557 2,962ms 10 Dec 2024 854th KatieLG 🇬🇧 149 563 980ms 1 Nov 2024 855th HumanoidCPU 148 456 1ms 1 Nov 2024 855th dokutan 148 456 1ms 1 Nov 2024 855th Shanethegamer 🇺🇸 148 456 2ms 1 Nov 2024 855th CaedenHarper 🇨🇦 148 456 1ms 23 Jan 2025 855th Maashau 148 456 2ms 12 Dec 2025 860th HumanoidCPU 146 461 124ms 1 Nov 2024 860th KatieLG 🇬🇧 146 461 117ms 1 Nov 2024 860th Shanethegamer 🇺🇸 146 461 111ms 1 Nov 2024 860th MeWhenI 🇻🇦 146 461 109ms 2 Nov 2024 860th CaedenHarper 🇨🇦 146 461 110ms 24 Jan 2025 865th KatieLG 🇬🇧 146 466 117ms 30 Nov 2025 866th KatieLG 🇬🇧 146 538 491ms 1 Nov 2024 867th JunkIce 145 449 640ms 3 Dec 2024 868th KatieLG-Transpiler 🇬🇧 145 528 362ms 9 Jan 2026 869th Maznek 144 364 12ms 8 Nov 2024 869th elisherer 🇮🇱 144 364 11ms 3 Nov 2025 871st HumanoidCPU 144 452 348ms 1 Nov 2024 871st Shanethegamer 🇺🇸 144 452 367ms 1 Nov 2024 871st JOrE20 144 452 423ms 18 days ago 874th KatieLG 🇬🇧 143 469 4ms 30 Nov 2025 875th HumanoidCPU 141 446 72ms 1 Nov 2024 875th Shanethegamer 🇺🇸 141 446 73ms 1 Nov 2024 875th MeWhenI 🇻🇦 141 446 77ms 2 Nov 2024 875th snoozingnewt 🇨🇦 141 446 77ms 3 Nov 2024 875th CaedenHarper 🇨🇦 141 446 71ms 16 Aug 2025 880th KatieLG-Transpiler 🇬🇧 140 564 148ms 9 Jan 2026 First Prev 801–880 of 1,090 Next Last