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 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 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 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 675th TheZwierzLF 🇵🇱 535 149 11ms 16 days ago 677th msbranicky 533 175 422ms 13 Dec 2024 678th deancureton 532 121 9ms 30 Dec 2024 679th FlorianCassayre 🇫🇷 531 150 16ms 1 Oct 2024 679th jameswmccarty 531 150 10ms 5 Oct 2024 679th yousefalizadeh 531 150 10ms 23 Oct 2024 679th feherd 531 150 10ms 31 Oct 2024 679th kadamkaustubh 531 150 9ms 8 Nov 2025 684th msbranicky 527 126 2,981ms 9 Jan 2025 685th blaztoma 🇱🇹 526 154 103ms 12 days ago 686th adamnielson42 🇺🇸 524 152 12ms 6 Oct 2024 686th voidgloom 524 152 10ms 22 Oct 2024 686th omero-san 524 152 9ms 22 Sep 2025 686th brochmann 🇸🇪 524 152 13ms 12 Oct 2025 690th Macweese 524 178 382ms 3 Aug 2025 691st galloj 🇨🇿 522 112 19ms 4 Oct 2024 692nd xyangst 521 153 9ms 1 Oct 2024 692nd denisfouchard 521 153 10ms 21 Aug 2025 694th snoozingnewt 🇨🇦 519 213 138ms 2 Nov 2025 695th bac0id 518 180 370ms 9 Jan 2025 696th osNiko 🇧🇷 517 154 11ms 21 Aug 2025 697th sidok 515 109 247ms 13 Nov 2024 698th dokutan 514 143 128ms 19 Oct 2024 699th robin-scragg 514 155 13ms 21 Aug 2025 699th celiendonze 🇨🇭 514 155 11ms 17 Oct 2025 701st travisdoesmath 511 156 9ms 7 Sep 2025 701st Shotokhan 511 156 9ms 21 Sep 2025 703rd nephila-nacrea 🇬🇧 510 77 3ms 2 Oct 2024 704th yoshykai 510 183 364ms 12 Apr 2025 705th KatieLG 🇬🇧 509 140 344ms 1 Oct 2024 706th KatieLG 🇬🇧 509 146 9ms 2 Oct 2024 707th dokutan 508 116 746ms 30 Aug 2025 708th dokutan 507 126 138ms 22 Jun 2025 709th Chinay-Domitrix 🇺🇸 507 131 3,327ms 30 Mar 2025 710th lhulinsky 507 157 9ms 21 Oct 2024 711th ThatAlo 504 158 10ms 9 Dec 2024 712th TheZwierzLF 🇵🇱 502 132 522ms 16 days ago 712th Andrey2001 502 132 720ms 13 days ago 714th msbranicky 501 138 3ms 3 Oct 2024 715th snoozingnewt 🇨🇦 501 142 364ms 2 Nov 2025 716th webmiche 501 159 10ms 3 Nov 2025 717th jlangvand 499 141 2ms 15 Oct 2024 717th HumanoidCPU 499 141 1ms 7 Mar 2025 719th MeWhenI 🇻🇦 499 149 55ms 4 Oct 2024 720th janAkali 🇷🇺 499 167 357ms 8 Oct 2024 721st Mabeloid 🇳🇴 498 133 538ms 2 Oct 2024 722nd CheeseCake628 🇳🇴 498 160 102ms 5 Nov 2024 723rd pres-abhisheksinha 495 161 10ms 8 Oct 2024 724th CarterStroik 493 161 2ms 21 days ago 725th ibixina 492 162 9ms 13 Oct 2024 725th TheAtrossian 492 162 10ms 5 Jan 2025 727th TheRealOhead 🇺🇸 491 131 9ms 1 Oct 2024 728th HumanoidCPU 491 145 388ms 5 Oct 2024 729th snoozingnewt 🇨🇦 490 150 129ms 2 Nov 2025 730th JunkIce 487 136 490ms 3 Dec 2024 731st snoozingnewt 🇨🇦 487 249 26ms 2 Nov 2025 732nd snoozingnewt 🇨🇦 486 117 904ms 2 Nov 2025 733rd h-hh-hhh 🇺🇦 486 177 56ms 2 Nov 2024 734th Vaekor 483 165 10ms 15 Dec 2024 735th snoozingnewt 🇨🇦 482 173 332ms 2 Nov 2025 736th alphafalfa 480 92 2ms 8 Nov 2024 737th h-hh-hhh 🇺🇦 478 147 2ms 2 Nov 2024 738th mitzal 478 180 58ms 9 Feb 2025 739th ravnskjaer 🇩🇰 478 195 453ms 20 Dec 2024 740th MiffOttah 475 150 369ms 6 Oct 2024 741st JesseNoEyes 🇺🇸 471 169 10ms 1 Oct 2024 742nd luca1339 471 198 371ms 4 Nov 2024 743rd Maximizer02 471 201 10ms 1 Oct 2024 744th iczelia 🇩🇪 470 94 2ms 23 Sep 2025 745th zyc-2024 🇨🇳 469 170 9ms 5 Oct 2024 746th ejini6969 468 102 32ms 14 Jun 2025 747th ComputerKWasTaken 🇺🇸 466 171 10ms 14 Oct 2024 748th snoozingnewt 🇨🇦 466 200 310ms 2 Nov 2025 749th snoozingnewt 🇨🇦 464 121 200ms 13 days ago 750th Jacob385 462 202 358ms 2 Oct 2024 First Prev 676–750 of 844 Next Last