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 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 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 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 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 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 Rectangle Fill Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Taxicab Numbers Turtle Tutorial # Golfer Points Bytes Time Submitted 481st janlelis 704 68 36ms 1 Oct 2024 482nd MeWhenI 🇻🇦 704 115 453ms 5 Oct 2024 483rd Shanethegamer 🇺🇸 704 156 30ms 2 Oct 2024 484th emgordon154 702 76 5ms 7 Jun 2025 485th mousetail 🇳🇱 702 133 169ms 3 Oct 2024 486th LukeBridges 🇬🇧 701 92 10ms 3 Oct 2024 487th Alex-x90 🇺🇸 701 124 435ms 1 Oct 2024 487th Herbert00709 🇵🇱 701 124 61ms 14 Jun 2025 489th albanian-laundromat 700 108 55ms 14 days ago 490th HumanoidCPU 699 114 64ms 7 Mar 2025 491st emgordon154 697 134 241ms 25 Feb 2025 492nd tobeannouncd 697 159 146ms 13 Dec 2024 493rd MeWhenI 🇻🇦 697 174 41ms 13 Feb 2025 494th Shanethegamer 🇺🇸 693 41 3ms 4 Oct 2024 495th Salutations45 693 93 10ms 17 Nov 2024 495th strattonwhisler 693 93 10ms 26 Mar 2025 495th JOrE20 693 93 10ms 12 Feb 2026 498th jipsong 🇩🇪 693 115 16ms 12 May 2025 498th luuumine 🇫🇷 693 115 17ms 2 Dec 2025 498th Bmrl7 693 115 10ms 25 Dec 2025 501st pardouin 🇫🇷 691 57 4ms 3 Oct 2024 502nd NickTheEASDude 🇺🇸 690 115 3ms 17 Dec 2024 503rd rowechenzhong 687 116 10ms 17 Oct 2024 504th MeWhenI 🇻🇦 686 68 267ms 2 Oct 2024 505th madex 🇩🇪 686 103 1ms 2 Oct 2024 506th aDwarfNamedUrist 684 162 138ms 1 Sep 2025 507th CatsAreFluffy 683 53 53ms 27 Dec 2024 508th MeWhenI 🇻🇦 681 108 206ms 2 Oct 2024 509th dtbao20 🇻🇳 681 117 18ms 1 Oct 2024 509th Pyroan 681 117 17ms 22 Feb 2025 509th vgamula 🇺🇦 681 117 16ms 5 Aug 2025 509th FortuiteMan 🇫🇷 681 117 17ms 1 Dec 2025 509th yujqiao 681 117 17ms 16 Dec 2025 514th the-zammers 680 163 149ms 1 Dec 2024 515th BlankSpruce 679 104 2ms 1 Oct 2024 516th tailorspy 679 128 440ms 4 Oct 2024 517th GrayJoKing 🇦🇺 678 79 1,204ms 1 Oct 2024 518th commandz0 🇺🇸 677 98 505ms 1 Sep 2025 519th elgan65536 🇺🇸 676 118 12ms 2 Oct 2024 519th logvp 676 118 17ms 6 Oct 2024 519th ahmetdemirag 🇨🇾 676 118 10ms 6 Feb 2025 519th dirckvdende 676 118 17ms 10 Jul 2025 523rd edsrzf 🇳🇿 674 99 2,554ms 5 Jul 2025 523rd jkelly467 674 99 2,723ms 22 Jan 2026 525th Yax42 🇫🇷 674 129 68ms 8 Jan 2026 525th emgordon154 674 129 61ms 8 Feb 2026 527th Herbert00709 🇵🇱 673 105 2ms 14 Jun 2025 528th jerrandolph 673 177 295ms 25 Sep 2025 528th CaedenHarper 🇨🇦 673 177 312ms 17 Nov 2025 530th error256 671 101 5ms 24 Oct 2024 531st CaedenHarper 🇨🇦 670 99 425ms 11 days ago 532nd emgordon154 670 115 111ms 9 Dec 2025 533rd jtaxen 670 119 17ms 21 Oct 2024 533rd psbpsbp 670 119 10ms 19 Dec 2024 533rd klixel 🇨🇦 670 119 10ms 9 Apr 2025 533rd vhoulbreque 🇫🇷 670 119 9ms 21 Nov 2025 537th Shanethegamer 🇺🇸 668 65 1ms 1 Oct 2024 538th CaedenHarper 🇨🇦 667 140 571ms 3 Oct 2025 539th rniii 666 106 1ms 2 Oct 2024 539th gastropner 666 106 2ms 11 Feb 2025 539th solisolu 666 106 2ms 14 Feb 2026 542nd dbut2 🇦🇺 666 179 284ms 31 Oct 2024 543rd two-bad 🇬🇧 664 97 11ms 2 Oct 2024 543rd LordSir101 664 97 9ms 10 Aug 2025 545th TaserTheFox 🇺🇸 664 120 17ms 8 Oct 2024 545th yokasuretsu 664 120 11ms 26 Jan 2025 545th Troon 664 120 11ms 17 Feb 2025 545th keelimeguy 🇺🇸 664 120 18ms 14 Jun 2025 549th yeminghan2021 663 131 70ms 3 Feb 2026 550th snoozingnewt 🇨🇦 662 180 295ms 2 Nov 2025 551st 4hg 🇺🇸 661 59 34ms 5 Oct 2024 552nd BREMAUCY 🇫🇷 659 121 19ms 18 Jul 2025 553rd xyangst 658 98 10ms 15 Oct 2024 553rd BambooleanLogic 🇸🇪 658 98 10ms 21 Oct 2024 555th error256 658 142 164ms 31 May 2025 556th AlephSquirrel 657 146 4ms 14 May 2025 557th jwhear 🇺🇸 655 197 1,696ms 1 Oct 2024 558th chartung17 654 122 10ms 24 Mar 2025 559th w911 651 183 281ms 7 Oct 2024 560th albanian-laundromat 651 293 14ms 8 Dec 2025 First Prev 481–560 of 911 Next Last