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 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 481st HumanoidCPU 699 114 64ms 7 Mar 2025 482nd tobeannouncd 697 159 146ms 13 Dec 2024 483rd MeWhenI 🇻🇦 697 174 41ms 13 Feb 2025 484th emgordon154 696 134 216ms 25 Feb 2025 485th Shanethegamer 🇺🇸 693 41 3ms 4 Oct 2024 486th jipsong 🇩🇪 693 115 16ms 12 May 2025 486th luuumine 🇫🇷 693 115 17ms 2 Dec 2025 486th Bmrl7 693 115 10ms 25 Dec 2025 489th Salutations45 692 93 10ms 17 Nov 2024 489th strattonwhisler 692 93 10ms 26 Mar 2025 489th JOrE20 692 93 10ms 9 days ago 492nd pardouin 🇫🇷 691 57 4ms 3 Oct 2024 493rd NickTheEASDude 🇺🇸 690 115 3ms 17 Dec 2024 494th rowechenzhong 687 116 10ms 17 Oct 2024 495th MeWhenI 🇻🇦 686 68 285ms 2 Oct 2024 496th madex 🇩🇪 686 103 1ms 2 Oct 2024 497th aDwarfNamedUrist 684 162 138ms 1 Sep 2025 498th CatsAreFluffy 683 53 53ms 27 Dec 2024 499th MeWhenI 🇻🇦 681 108 141ms 2 Oct 2024 500th dtbao20 🇻🇳 681 117 18ms 1 Oct 2024 500th Pyroan 681 117 17ms 22 Feb 2025 500th vgamula 🇺🇦 681 117 16ms 5 Aug 2025 500th FortuiteMan 🇫🇷 681 117 17ms 1 Dec 2025 500th yujqiao 681 117 17ms 16 Dec 2025 505th the-zammers 680 163 149ms 1 Dec 2024 506th BlankSpruce 679 104 2ms 1 Oct 2024 507th tailorspy 679 128 403ms 4 Oct 2024 508th GrayJoKing 🇦🇺 678 79 1,204ms 1 Oct 2024 509th commandz0 🇺🇸 677 98 505ms 1 Sep 2025 510th elgan65536 🇺🇸 676 118 12ms 2 Oct 2024 510th logvp 676 118 17ms 6 Oct 2024 510th ahmetdemirag 🇨🇾 676 118 10ms 6 Feb 2025 510th dirckvdende 676 118 17ms 10 Jul 2025 514th edsrzf 🇳🇿 674 99 2,281ms 5 Jul 2025 514th jkelly467 674 99 2,384ms 22 Jan 2026 516th Yax42 🇫🇷 674 129 70ms 8 Jan 2026 516th emgordon154 674 129 55ms 13 days ago 518th Herbert00709 🇵🇱 673 105 2ms 14 Jun 2025 519th jerrandolph 673 177 303ms 25 Sep 2025 519th CaedenHarper 🇨🇦 673 177 292ms 17 Nov 2025 521st error256 671 101 5ms 24 Oct 2024 522nd emgordon154 670 115 120ms 9 Dec 2025 523rd jtaxen 670 119 17ms 21 Oct 2024 523rd psbpsbp 670 119 10ms 19 Dec 2024 523rd klixel 🇨🇦 670 119 10ms 9 Apr 2025 523rd vhoulbreque 🇫🇷 670 119 9ms 21 Nov 2025 527th Shanethegamer 🇺🇸 668 65 2ms 1 Oct 2024 528th CaedenHarper 🇨🇦 667 140 571ms 3 Oct 2025 529th rniii 666 106 1ms 2 Oct 2024 529th gastropner 666 106 2ms 11 Feb 2025 529th solisolu 666 106 2ms 7 days ago 532nd dbut2 🇦🇺 666 179 297ms 31 Oct 2024 533rd two-bad 🇬🇧 664 97 11ms 2 Oct 2024 533rd LordSir101 664 97 10ms 10 Aug 2025 535th TaserTheFox 🇺🇸 664 120 17ms 8 Oct 2024 535th yokasuretsu 664 120 11ms 26 Jan 2025 535th Troon 664 120 11ms 17 Feb 2025 535th keelimeguy 🇺🇸 664 120 18ms 14 Jun 2025 539th CaedenHarper 🇨🇦 663 100 459ms 22 Jul 2025 540th yeminghan2021 663 131 56ms 18 days ago 541st snoozingnewt 🇨🇦 662 180 291ms 2 Nov 2025 542nd 4hg 🇺🇸 661 59 34ms 5 Oct 2024 543rd BREMAUCY 🇫🇷 659 121 19ms 18 Jul 2025 544th xyangst 657 98 16ms 15 Oct 2024 544th BambooleanLogic 🇸🇪 657 98 10ms 21 Oct 2024 546th error256 657 142 159ms 31 May 2025 547th AlephSquirrel 657 146 4ms 14 May 2025 548th jwhear 🇺🇸 655 197 1,696ms 1 Oct 2024 549th chartung17 653 122 10ms 24 Mar 2025 550th w911 651 183 293ms 7 Oct 2024 551st albanian-laundromat 651 293 14ms 8 Dec 2025 552nd Babafaba 650 102 530ms 11 Nov 2025 553rd emgordon154 650 111 4ms 12 Jan 2025 554th DialFrost 🇸🇬 648 67 2ms 22 Dec 2024 555th msbranicky 648 123 16ms 3 Oct 2024 555th bobbysq 648 123 11ms 5 Oct 2024 555th wuzekai518 648 123 10ms 8 Oct 2024 558th rucin93 🇵🇱 648 144 143ms 28 Oct 2024 559th koipondx86 645 123 2ms 8 Nov 2024 560th CaedenHarper 🇨🇦 644 100 10ms 22 Aug 2025 First Prev 481–560 of 895 Next Last