Card Number Validation 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 Continued Fractions 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 Gray Code Decoder Gray Code Encoder 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 Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus Connect Four Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial All Languages ><> ALGOL 68 ArkScript 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 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 ArkScript 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 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 Continued Fractions 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 Gray Code Decoder Gray Code Encoder 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 Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus Connect Four Crossword CSS Colors (Inverse) CSS Grid Ellipse Perimeters Flags Floyd-Steinberg Dithering Hexagonal Spiral Highly Composite Numbers NFA Simulator Numbrix Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Bytes Time Submitted 481st OllieBoyne 🇬🇧 712 112 19ms 17 Oct 2024 481st WillConker 712 112 11ms 22 Oct 2024 481st maxgodfrey2004 🇨🇦 712 112 10ms 4 Jan 2025 481st Babafaba 712 112 18ms 11 Nov 2025 485th Natanaelel 🇸🇪 711 55 34ms 1 Mar 2025 486th DialFrost 🇸🇬 711 132 229ms 8 Apr 2025 487th Shanethegamer 🇺🇸 710 156 30ms 2 Oct 2024 488th Shanethegamer 🇺🇸 710 172 39ms 2 Oct 2024 489th Shanethegamer 🇺🇸 709 118 376ms 2 Oct 2024 490th edsrzf 🇳🇿 708 76 1,005ms 1 Oct 2024 491st cbrt-x 708 157 139ms 1 Oct 2024 492nd Alex-x90 🇺🇸 707 100 2ms 1 Oct 2024 492nd madex 🇩🇪 707 100 2ms 6 days ago 494th BlankSpruce 707 123 419ms 1 Oct 2024 495th SB-945 706 113 17ms 1 Oct 2024 495th Artemis21 🇬🇧 706 113 18ms 23 Jan 2025 495th fkantelberg 706 113 10ms 11 Jul 2025 498th mousetail 🇳🇱 706 133 159ms 3 Oct 2024 499th janlelis 705 68 36ms 1 Oct 2024 500th emgordon154 705 76 5ms 7 Jun 2025 501st Shanethegamer 🇺🇸 704 101 5ms 2 Oct 2024 502nd Alex-x90 🇺🇸 702 124 453ms 1 Oct 2024 502nd Herbert00709 🇵🇱 702 124 62ms 14 Jun 2025 504th MeWhenI 🇻🇦 702 174 41ms 13 Feb 2025 505th LukeBridges 🇬🇧 701 92 10ms 3 Oct 2024 505th ComradeSquirrel 701 92 10ms 30 hours ago 507th albanian-laundromat 🇺🇸 700 108 78ms 6 Mar 2026 508th HumanoidCPU 700 114 66ms 7 Mar 2025 509th emgordon154 700 134 240ms 25 Feb 2025 510th tobeannouncd 700 159 146ms 13 Dec 2024 511th CaedenHarper 🇨🇦 694 36 45ms 5 days ago 512th Salutations45 694 93 12ms 17 Nov 2024 512th strattonwhisler 694 93 10ms 26 Mar 2025 512th JOrE20 694 93 16ms 12 Feb 2026 515th jipsong 🇩🇪 694 115 18ms 12 May 2025 515th luuumine 🇫🇷 694 115 19ms 2 Dec 2025 515th Bmrl7 694 115 13ms 25 Dec 2025 518th Shanethegamer 🇺🇸 693 41 3ms 4 Oct 2024 519th pardouin 🇫🇷 693 57 4ms 3 Oct 2024 520th NickTheEASDude 🇺🇸 691 115 3ms 17 Dec 2024 521st MeWhenI 🇻🇦 688 68 286ms 2 Oct 2024 522nd rowechenzhong 688 116 17ms 17 Oct 2024 523rd solisolu 687 103 2ms 13 days ago 524th aDwarfNamedUrist 687 162 138ms 1 Sep 2025 525th CatsAreFluffy 685 53 56ms 27 Dec 2024 526th dtbao20 🇻🇳 682 117 19ms 1 Oct 2024 526th Pyroan 682 117 18ms 22 Feb 2025 526th vgamula 🇺🇦 682 117 17ms 5 Aug 2025 526th FortuiteMan 🇫🇷 682 117 18ms 1 Dec 2025 526th yujqiao 682 117 25ms 16 Dec 2025 531st the-zammers 682 163 149ms 1 Dec 2024 532nd GrayJoKing 🇦🇺 681 79 1,204ms 1 Oct 2024 533rd BlankSpruce 680 104 2ms 1 Oct 2024 534th tailorspy 680 128 440ms 4 Oct 2024 535th commandz0 🇺🇸 678 98 508ms 1 Sep 2025 536th elgan65536 🇺🇸 676 118 11ms 2 Oct 2024 536th logvp 676 118 18ms 6 Oct 2024 536th ahmetdemirag 🇨🇾 676 118 10ms 6 Feb 2025 536th dirckvdende 676 118 17ms 10 Jul 2025 540th jkelly467 675 99 2,591ms 22 Jan 2026 541st emgordon154 675 115 111ms 9 Dec 2025 542nd Yax42 🇫🇷 675 129 87ms 8 Jan 2026 542nd emgordon154 675 129 60ms 8 Feb 2026 544th jerrandolph 675 177 368ms 25 Sep 2025 544th CaedenHarper 🇨🇦 675 177 326ms 17 Nov 2025 546th Herbert00709 🇵🇱 674 105 2ms 14 Jun 2025 547th error256 672 101 5ms 24 Oct 2024 548th CaedenHarper 🇨🇦 671 99 484ms 8 Mar 2026 549th jtaxen 670 119 18ms 21 Oct 2024 549th psbpsbp 670 119 9ms 19 Dec 2024 549th klixel 🇨🇦 670 119 10ms 9 Apr 2025 549th vhoulbreque 🇫🇷 670 119 16ms 21 Nov 2025 553rd Shanethegamer 🇺🇸 669 65 1ms 1 Oct 2024 554th CaedenHarper 🇨🇦 668 140 571ms 3 Oct 2025 555th GolfingSuccess 🇬🇷 668 174 40ms 22 days ago 556th rniii 667 106 1ms 2 Oct 2024 556th gastropner 667 106 2ms 11 Feb 2025 558th dbut2 🇦🇺 667 179 327ms 31 Oct 2024 559th two-bad 🇬🇧 665 97 12ms 2 Oct 2024 559th LordSir101 665 97 11ms 10 Aug 2025 First Prev 481–560 of 1,004 Next Last