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 676th msbranicky 533 175 162ms 13 Dec 2024 677th deancureton 532 121 9ms 30 Dec 2024 678th FlorianCassayre 🇫🇷 531 150 16ms 1 Oct 2024 678th jameswmccarty 531 150 10ms 5 Oct 2024 678th yousefalizadeh 531 150 10ms 23 Oct 2024 678th feherd 531 150 10ms 31 Oct 2024 678th kadamkaustubh 531 150 9ms 8 Nov 2025 683rd msbranicky 527 126 2,869ms 9 Jan 2025 684th adamnielson42 🇺🇸 524 152 12ms 6 Oct 2024 684th voidgloom 524 152 10ms 22 Oct 2024 684th omero-san 524 152 9ms 22 Sep 2025 684th brochmann 🇸🇪 524 152 13ms 12 Oct 2025 688th Macweese 524 178 308ms 3 Aug 2025 689th galloj 🇨🇿 522 112 19ms 4 Oct 2024 690th xyangst 521 153 9ms 1 Oct 2024 690th denisfouchard 521 153 10ms 21 Aug 2025 692nd blaztoma 🇱🇹 519 154 107ms 9 days ago 693rd snoozingnewt 🇨🇦 519 213 119ms 2 Nov 2025 694th bac0id 518 180 306ms 9 Jan 2025 695th osNiko 🇧🇷 517 154 11ms 21 Aug 2025 696th sidok 515 109 247ms 13 Nov 2024 697th dokutan 514 143 128ms 19 Oct 2024 698th robin-scragg 514 155 13ms 21 Aug 2025 698th celiendonze 🇨🇭 514 155 11ms 17 Oct 2025 700th travisdoesmath 511 156 9ms 7 Sep 2025 700th Shotokhan 511 156 9ms 21 Sep 2025 702nd nephila-nacrea 🇬🇧 510 77 4ms 2 Oct 2024 703rd yoshykai 510 183 309ms 12 Apr 2025 704th KatieLG 🇬🇧 509 140 358ms 1 Oct 2024 705th KatieLG 🇬🇧 509 146 9ms 2 Oct 2024 706th dokutan 508 116 785ms 30 Aug 2025 707th dokutan 507 126 138ms 22 Jun 2025 708th Chinay-Domitrix 🇺🇸 507 131 2,930ms 30 Mar 2025 709th lhulinsky 507 157 9ms 21 Oct 2024 710th ThatAlo 504 158 10ms 9 Dec 2024 711th TheZwierzLF 🇵🇱 502 132 547ms 13 days ago 711th Andrey2001 502 132 710ms 10 days ago 713th msbranicky 501 138 3ms 3 Oct 2024 714th snoozingnewt 🇨🇦 501 142 379ms 2 Nov 2025 715th webmiche 501 159 10ms 3 Nov 2025 716th jlangvand 499 141 1ms 15 Oct 2024 716th HumanoidCPU 499 141 2ms 7 Mar 2025 718th MeWhenI 🇻🇦 499 149 55ms 4 Oct 2024 719th janAkali 🇷🇺 499 167 335ms 8 Oct 2024 720th Mabeloid 🇳🇴 498 133 512ms 2 Oct 2024 721st CheeseCake628 🇳🇴 498 160 102ms 5 Nov 2024 722nd pres-abhisheksinha 495 161 10ms 8 Oct 2024 723rd StronkCheese2 493 161 2ms 19 days ago 724th ibixina 492 162 9ms 13 Oct 2024 724th TheAtrossian 492 162 10ms 5 Jan 2025 726th TheRealOhead 🇺🇸 491 131 9ms 1 Oct 2024 727th HumanoidCPU 491 145 388ms 5 Oct 2024 728th snoozingnewt 🇨🇦 490 150 135ms 2 Nov 2025 729th JunkIce 487 136 518ms 3 Dec 2024 730th snoozingnewt 🇨🇦 487 249 27ms 2 Nov 2025 731st snoozingnewt 🇨🇦 486 117 940ms 2 Nov 2025 732nd h-hh-hhh 🇺🇦 486 177 59ms 2 Nov 2024 733rd Vaekor 483 165 10ms 15 Dec 2024 734th snoozingnewt 🇨🇦 482 173 353ms 2 Nov 2025 735th alphafalfa 480 92 2ms 8 Nov 2024 736th h-hh-hhh 🇺🇦 479 147 2ms 2 Nov 2024 737th mitzal 478 180 60ms 9 Feb 2025 738th ravnskjaer 🇩🇰 478 195 306ms 20 Dec 2024 739th MiffOttah 475 150 369ms 6 Oct 2024 740th JesseNoEyes 🇺🇸 471 169 10ms 1 Oct 2024 741st luca1339 471 198 302ms 4 Nov 2024 742nd Maximizer02 471 201 10ms 1 Oct 2024 743rd iczelia 🇩🇪 470 94 3ms 23 Sep 2025 744th zyc-2024 🇨🇳 469 170 9ms 5 Oct 2024 745th ejini6969 468 102 35ms 14 Jun 2025 746th ComputerKWasTaken 🇺🇸 466 171 10ms 14 Oct 2024 747th snoozingnewt 🇨🇦 466 200 225ms 2 Nov 2025 748th snoozingnewt 🇨🇦 464 121 206ms 11 days ago 749th Jacob385 462 202 298ms 2 Oct 2024 750th snoozingnewt 🇨🇦 460 96 2ms 2 Nov 2025 First Prev 676–750 of 842 Next Last