ISBN 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 ><> 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 Lily 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 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 480th stefangimmillaro 830 101 4ms 12 Oct 2023 480th edsrzf 🇳🇿 830 101 5ms 7 Oct 2025 483rd DialFrost 🇸🇬 828 72 755ms 4 Sep 2025 484th Shanethegamer 🇺🇸 828 107 111ms 24 May 2025 485th Alex-x90 🇺🇸 828 133 58ms 8 Aug 2023 485th Yewzir 🇧🇪 828 133 59ms 29 Nov 2023 485th albanian-laundromat 828 133 3ms 22 Sep 2025 488th CLOStrophobic 🇮🇹 827 123 8ms 21 Jan 2025 488th kg583 🇺🇸 827 123 8ms 13 mins ago 490th quimey 825 107 10ms 7 Mar 2023 490th fourth-bit 825 107 10ms 10 Jul 2024 490th fuzzylojik-golf 🇺🇸 825 107 10ms 19 May 2025 490th solisolu 825 107 10ms 25 Nov 2025 494th Shanethegamer 🇺🇸 825 112 2ms 20 Apr 2022 495th GrayJoKing 🇦🇺 824 99 4ms 20 Sep 2023 496th m-tkach 🇺🇦 824 130 607ms 25 Sep 2025 497th error256 823 66 34ms 8 May 2025 498th annaproxy 823 94 428ms 19 Mar 2022 499th primo-ppcg 🇹🇭 823 164 25ms 25 Jun 2022 500th MeWhenI 🇻🇦 822 102 6ms 26 Nov 2023 501st DialFrost 🇸🇬 822 286 140ms 22 Apr 2025 501st frankgraziano 822 286 651ms 19 days ago 503rd Frowny 821 53 32ms 11 Jan 2022 504th Shanethegamer 🇺🇸 821 93 458ms 16 Jan 2024 504th Yewzir 🇧🇪 821 93 524ms 22 Jun 2024 506th Shanethegamer 🇺🇸 821 124 6ms 27 Aug 2024 507th Mandrzejy 🇵🇱 821 134 54ms 13 Sep 2024 508th edsrzf 🇳🇿 819 93 2,233ms 1 Sep 2025 509th Steffan153 🇫🇮 818 57 3ms 6 Jan 2023 509th Natanaelel 🇸🇪 818 57 3ms 13 May 2023 511th prplz 🇦🇺 818 108 10ms 11 Jan 2022 511th galloj 🇨🇿 818 108 10ms 21 Sep 2022 511th TaserTheFox 🇺🇸 818 108 9ms 3 Apr 2023 511th jatloe 818 108 10ms 26 Aug 2024 511th cros107 🇦🇺 818 108 10ms 10 Aug 2025 516th Yewzir 🇧🇪 818 113 2ms 29 Nov 2023 516th drabart 🇵🇱 818 113 2ms 18 Dec 2023 518th btnlq 818 125 14ms 12 Jan 2022 519th emgordon154 817 181 1,625ms 22 Dec 2025 520th lynn 816 38 38ms 22 Jul 2022 520th MeWhenI 🇻🇦 816 38 41ms 25 Aug 2022 520th 5cw 🇺🇸 816 38 2ms 27 May 2024 523rd itsh01 816 87 9ms 13 Mar 2022 523rd AlephSquirrel 816 87 11ms 15 Feb 2023 523rd danielphilpottwork 816 87 10ms 20 Dec 2023 523rd Attero 🇸🇪 816 87 11ms 22 Dec 2023 527th DialFrost 🇸🇬 816 118 461ms 27 Nov 2024 528th kg583 🇺🇸 816 154 38ms 17 Nov 2025 529th sean-niemann 🇺🇸 816 163 289ms 30 Aug 2023 529th Yewzir 🇧🇪 816 163 295ms 7 Feb 2024 529th CaedenHarper 🇨🇦 816 163 306ms 2 Nov 2025 532nd Irratix 🇳🇱 815 135 389ms 14 May 2022 533rd janbehrens 🇩🇪 814 103 4ms 2 Jul 2023 534th plcc0 814 125 6ms 23 Mar 2025 535th scpchicken 🇵🇼 813 55 124ms 13 Mar 2022 536th Babafaba 813 94 475ms 28 Nov 2025 537th jotslo 🇬🇧 812 107 2ms 17 Jul 2022 538th janlelis 811 67 38ms 11 Jan 2022 538th stefangimmillaro 811 67 36ms 26 Dec 2024 540th chunes3 🇺🇸 811 100 71ms 15 Sep 2023 540th Natanaelel 🇸🇪 811 100 70ms 8 Dec 2023 542nd GrayJoKing 🇦🇺 811 113 421ms 24 Jul 2025 543rd dokutan 811 130 8ms 21 Jun 2024 544th error256 811 132 385ms 21 Nov 2025 545th ZakkkkAttackkkk 🇵🇭 810 109 11ms 23 Feb 2022 545th cefqrn 810 109 10ms 24 Dec 2022 545th AlexanderFair 810 109 10ms 11 Jul 2023 545th firegene 🇮🇪 810 109 10ms 18 Jan 2024 545th PixelSoftwareStudios 🇺🇸 810 109 11ms 6 Jul 2024 545th andrewjc2000 810 109 9ms 9 Mar 2025 551st Mandrzejy 🇵🇱 810 114 1ms 13 Sep 2024 551st AZTECCO 810 114 2ms 16 Sep 2025 553rd GrayJoKing 🇦🇺 810 152 30ms 18 Jul 2023 553rd m-tkach 🇺🇦 810 152 31ms 9 days ago 555th Shanethegamer 🇺🇸 809 136 60ms 20 Apr 2022 556th MeWhenI 🇻🇦 807 101 5ms 23 May 2023 557th lifthrasiir 🇰🇷 807 206 9ms 18 Dec 2024 558th error256 806 74 742ms 6 days ago 559th ScottHamper 806 96 449ms 26 Feb 2022 559th stefangimmillaro 806 96 452ms 5 Jan 2023 First Prev 481–560 of 1,603 Next Last