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 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 Multitap Input 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 ><> 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 ALGOL 68 APL ArkScript Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Bytes Chars Scoring Bytes Chars Language All ><> 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 ALGOL 68 APL ArkScript Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight 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 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 Multitap Input 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 797th Maashau 148 456 2ms 25 days ago 802nd Maznek 146 364 10ms 8 Nov 2024 802nd elisherer 🇮🇱 146 364 10ms 3 Nov 2025 804th HumanoidCPU 146 461 111ms 1 Nov 2024 804th KatieLG 🇬🇧 146 461 110ms 1 Nov 2024 804th Shanethegamer 🇺🇸 146 461 119ms 1 Nov 2024 804th MeWhenI 🇻🇦 146 461 115ms 2 Nov 2024 804th CaedenHarper 🇨🇦 146 461 110ms 24 Jan 2025 809th KatieLG 🇬🇧 146 466 124ms 30 Nov 2025 810th JunkIce 144 449 645ms 3 Dec 2024 811th HumanoidCPU 143 452 438ms 1 Nov 2024 811th Shanethegamer 🇺🇸 143 452 360ms 1 Nov 2024 813th KatieLG 🇬🇧 142 469 5ms 30 Nov 2025 814th HumanoidCPU 141 446 72ms 1 Nov 2024 814th Shanethegamer 🇺🇸 141 446 73ms 1 Nov 2024 814th MeWhenI 🇻🇦 141 446 79ms 2 Nov 2024 814th snoozingnewt 🇨🇦 141 446 77ms 3 Nov 2024 814th CaedenHarper 🇨🇦 141 446 71ms 16 Aug 2025 819th dokutan 139 452 76ms 1 Nov 2024 820th emgordon154 139 602 1,729ms 12 Dec 2024 821st KatieLG 🇬🇧 138 505 625ms 30 Nov 2025 822nd HumanoidCPU 136 575 41ms 9 Mar 2025 823rd KatieLG 🇬🇧 135 465 110ms 30 Nov 2025 824th dokutan 134 473 2ms 1 Nov 2024 825th KatieLG 🇬🇧 133 475 1ms 1 Nov 2024 826th dokutan 133 483 1ms 21 Jun 2025 827th dokutan 133 591 40ms 1 Nov 2024 828th KatieLG 🇬🇧 132 487 1ms 30 Nov 2025 829th KatieLG 🇬🇧 131 443 2ms 30 Nov 2025 830th HumanoidCPU 131 444 2ms 1 Nov 2024 830th Shanethegamer 🇺🇸 131 444 3ms 1 Nov 2024 830th dokutan 131 444 2ms 1 Nov 2024 830th MeWhenI 🇻🇦 131 444 2ms 2 Nov 2024 830th CaedenHarper 🇨🇦 131 444 2ms 16 Aug 2025 835th KatieLG 🇬🇧 130 515 2ms 8 Jan 2025 836th KatieLG 🇬🇧 127 530 1ms 1 Nov 2024 837th sciencejiho 127 532 2ms 12 Feb 2025 838th dokutan 126 439 35ms 21 Apr 2025 838th olleicua 🇺🇸 126 439 37ms 12 Jun 2025 840th HumanoidCPU 124 445 38ms 1 Nov 2024 840th Shanethegamer 🇺🇸 124 445 39ms 1 Nov 2024 840th CaedenHarper 🇨🇦 124 445 36ms 16 Aug 2025 843rd MeWhenI 🇻🇦 124 515 1ms 2 Nov 2024 843rd CaedenHarper 🇨🇦 124 515 1ms 12 Nov 2025 843rd Shanethegamer 🇺🇸 124 515 1ms 12 Nov 2025 843rd HumanoidCPU 124 515 1ms 12 Nov 2025 847th HumanoidCPU 122 518 2ms 1 Nov 2024 847th Shanethegamer 🇺🇸 122 518 2ms 1 Nov 2024 847th MeWhenI 🇻🇦 122 518 2ms 2 Nov 2024 847th CaedenHarper 🇨🇦 122 518 1ms 22 Jan 2025 851st Shanethegamer 🇺🇸 121 453 117ms 1 Nov 2024 851st KatieLG 🇬🇧 121 453 114ms 1 Nov 2024 851st MeWhenI 🇻🇦 121 453 116ms 2 Nov 2024 851st CaedenHarper 🇨🇦 121 453 116ms 24 Jan 2025 855th KatieLG 🇬🇧 120 461 35ms 30 Nov 2025 856th HumanoidCPU 119 446 9ms 1 Nov 2024 856th dokutan 119 446 11ms 1 Nov 2024 856th KatieLG 🇬🇧 119 446 13ms 1 Nov 2024 856th MeWhenI 🇻🇦 119 446 9ms 2 Nov 2024 856th zakariamouhid 119 446 12ms 17 Nov 2024 856th Salutations45 119 446 10ms 22 Nov 2024 856th gigaprofisi 🇺🇸 119 446 10ms 20 Jun 2025 856th didion0 🇺🇸 119 446 9ms 26 Aug 2025 856th olleicua 🇺🇸 119 446 9ms 10 Sep 2025 865th iczelia 🇩🇪 119 447 10ms 24 Oct 2025 866th Quadruplay 119 448 10ms 12 Jul 2025 867th HumanoidCPU 117 446 1,005ms 1 Nov 2024 867th Shanethegamer 🇺🇸 117 446 998ms 1 Nov 2024 867th dokutan 117 446 967ms 1 Nov 2024 867th CaedenHarper 🇨🇦 117 446 1,033ms 24 Jan 2025 871st HumanoidCPU 117 448 152ms 1 Nov 2024 871st dokutan 117 448 216ms 1 Nov 2024 871st MeWhenI 🇻🇦 117 448 188ms 2 Nov 2024 871st MarcMush 🇫🇷 117 448 155ms 19 Nov 2024 871st CaedenHarper 🇨🇦 117 448 151ms 1 Feb 2025 876th JOrE20 🇺🇸 117 457 10ms 6 Nov 2025 877th KatieLG 🇬🇧 114 461 780ms 30 Nov 2025 878th KatieLG 🇬🇧 112 467 184ms 30 Nov 2025 879th HumanoidCPU 111 453 50ms 1 Nov 2024 880th MeWhenI 🇻🇦 111 454 52ms 2 Nov 2024 First Prev 801–880 of 1,000 Next Last