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 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 Calendar 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 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 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 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 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 Calendar 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 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 450th blaztoma 🇱🇹 699 114 17ms 25 Sep 2025 452nd BlankSpruce 699 123 388ms 1 Oct 2024 453rd emgordon154 697 101 2ms 25 Nov 2024 454th emgordon154 696 134 213ms 25 Feb 2025 455th tobeannouncd 695 159 162ms 13 Dec 2024 456th Alex-x90 🇺🇸 694 124 382ms 1 Oct 2024 456th Herbert00709 🇵🇱 694 124 58ms 14 Jun 2025 458th Shanethegamer 🇺🇸 693 41 3ms 4 Oct 2024 459th jipsong 🇩🇪 693 115 16ms 12 May 2025 459th luuumine 🇫🇷 693 115 18ms 5 days ago 461st Salutations45 692 93 10ms 17 Nov 2024 461st strattonwhisler 692 93 9ms 26 Mar 2025 463rd NickTheEASDude 🇺🇸 690 115 3ms 17 Dec 2024 464th pardouin 🇫🇷 688 57 5ms 3 Oct 2024 465th Bmrl7 687 116 10ms 3 Oct 2024 465th rowechenzhong 687 116 9ms 17 Oct 2024 467th MeWhenI 🇻🇦 686 68 223ms 2 Oct 2024 468th Lv0Sys 🇵🇱 685 94 9ms 15 Jun 2025 469th error256 685 104 367ms 14 Oct 2024 470th madex 🇩🇪 683 103 2ms 2 Oct 2024 471st aDwarfNamedUrist 682 162 183ms 1 Sep 2025 472nd MeWhenI 🇻🇦 681 108 179ms 2 Oct 2024 473rd dtbao20 🇻🇳 681 117 16ms 1 Oct 2024 473rd Pyroan 681 117 16ms 22 Feb 2025 473rd vgamula 🇺🇦 681 117 16ms 5 Aug 2025 473rd FortuiteMan 🇫🇷 681 117 21ms 6 days ago 477th CatsAreFluffy 680 53 50ms 27 Dec 2024 478th Shanethegamer 🇺🇸 679 65 2ms 1 Oct 2024 479th the-zammers 678 163 140ms 1 Dec 2024 480th BlankSpruce 677 104 2ms 1 Oct 2024 481st plcc0 676 37 70ms 6 Apr 2025 482nd commandblockguy 🇺🇸 676 98 476ms 1 Sep 2025 483rd elgan65536 675 118 10ms 2 Oct 2024 483rd logvp 675 118 16ms 6 Oct 2024 483rd ahmetdemirag 🇨🇾 675 118 13ms 6 Feb 2025 483rd plcc0 675 118 15ms 6 Apr 2025 483rd KatieLG 🇬🇧 675 118 17ms 20 Apr 2025 483rd dirckvdende 675 118 15ms 10 Jul 2025 489th jerrandolph 673 177 258ms 25 Sep 2025 489th CaedenHarper 🇨🇦 673 177 270ms 20 days ago 491st tailorspy 672 128 389ms 4 Oct 2024 492nd edsrzf 🇳🇿 671 99 2,289ms 5 Jul 2025 493rd Herbert00709 🇵🇱 670 105 2ms 14 Jun 2025 494th error256 669 101 4ms 24 Oct 2024 495th jtaxen 669 119 17ms 21 Oct 2024 495th psbpsbp 669 119 11ms 19 Dec 2024 495th klixel 🇨🇦 669 119 10ms 9 Apr 2025 495th vhoulbreque 🇫🇷 669 119 11ms 16 days ago 499th CaedenHarper 🇨🇦 666 140 336ms 3 Oct 2025 500th dbut2 🇦🇺 666 179 256ms 31 Oct 2024 501st emgordon154 665 111 4ms 12 Jan 2025 502nd two-bad 🇬🇧 664 97 10ms 2 Oct 2024 502nd LordSir101 664 97 10ms 10 Aug 2025 504th rniii 664 106 2ms 2 Oct 2024 504th gastropner 664 106 2ms 11 Feb 2025 506th TaserTheFox 🇺🇸 664 120 17ms 8 Oct 2024 506th yokasuretsu 664 120 11ms 26 Jan 2025 506th Troon 664 120 10ms 17 Feb 2025 506th keelimeguy 🇺🇸 664 120 16ms 14 Jun 2025 510th AlephSquirrel 664 146 4ms 14 May 2025 511th CaedenHarper 🇨🇦 663 100 477ms 22 Jul 2025 512th snoozingnewt 🇨🇦 662 180 258ms 2 Nov 2025 513th 4hg 🇺🇸 661 59 34ms 5 Oct 2024 514th DialFrost 🇸🇬 659 67 2ms 22 Dec 2024 515th BREMAUCY 🇫🇷 658 121 17ms 18 Jul 2025 516th xyangst 657 98 10ms 15 Oct 2024 516th BambooleanLogic 🇸🇪 657 98 9ms 21 Oct 2024 518th error256 657 142 159ms 31 May 2025 519th jwhear 🇺🇸 655 197 1,691ms 1 Oct 2024 520th chartung17 653 122 9ms 24 Mar 2025 521st w911 651 183 257ms 7 Oct 2024 522nd Babafaba 650 102 491ms 26 days ago 523rd MeWhenI 🇻🇦 648 91 737ms 29 Aug 2025 524th msbranicky 648 123 17ms 3 Oct 2024 524th bobbysq 648 123 10ms 5 Oct 2024 First Prev 451–525 of 842 Next Last