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 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 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 ArkScript 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 ArkScript 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 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 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 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 721st yoshykai 510 183 364ms 12 Apr 2025 722nd Chinay-Domitrix 🇺🇸 509 131 4,591ms 30 Mar 2025 723rd KatieLG 🇬🇧 509 146 8ms 2 Oct 2024 724th dokutan 508 116 746ms 30 Aug 2025 725th lhulinsky 508 157 9ms 21 Oct 2024 726th dokutan 507 126 143ms 22 Jun 2025 727th ThatAlo 504 158 10ms 9 Dec 2024 728th osNiko 🇧🇷 503 72 51ms 12 days ago 729th snoozingnewt 🇨🇦 503 142 463ms 2 Nov 2025 730th Andrey2001 502 132 629ms 27 Nov 2025 731st msbranicky 501 138 3ms 3 Oct 2024 732nd webmiche 501 159 10ms 3 Nov 2025 733rd jlangvand 500 141 2ms 15 Oct 2024 733rd HumanoidCPU 500 141 1ms 7 Mar 2025 735th blaztoma 🇱🇹 500 154 109ms 28 Nov 2025 736th MeWhenI 🇻🇦 499 149 56ms 4 Oct 2024 737th janAkali 🇷🇺 499 167 357ms 8 Oct 2024 738th Mabeloid 🇳🇴 498 133 566ms 2 Oct 2024 739th CheeseCake628 🇳🇴 498 160 102ms 5 Nov 2024 740th pres-abhisheksinha 495 161 10ms 8 Oct 2024 741st HumanoidCPU 492 145 479ms 5 Oct 2024 742nd CarterStroik 492 161 2ms 19 Nov 2025 743rd ibixina 492 162 9ms 13 Oct 2024 743rd TheAtrossian 492 162 10ms 5 Jan 2025 745th TheRealOhead 🇺🇸 491 131 10ms 1 Oct 2024 746th snoozingnewt 🇨🇦 490 150 154ms 2 Nov 2025 747th h-hh-hhh 🇺🇦 489 177 59ms 2 Nov 2024 748th JunkIce 487 136 563ms 3 Dec 2024 749th snoozingnewt 🇨🇦 487 249 26ms 2 Nov 2025 750th snoozingnewt 🇨🇦 486 117 1,338ms 2 Nov 2025 751st Vaekor 483 165 10ms 15 Dec 2024 752nd snoozingnewt 🇨🇦 482 173 332ms 2 Nov 2025 753rd mitzal 481 180 61ms 9 Feb 2025 754th alphafalfa 480 92 2ms 8 Nov 2024 755th h-hh-hhh 🇺🇦 479 147 2ms 2 Nov 2024 756th MiffOttah 476 150 457ms 6 Oct 2024 756th mwarvik 🇳🇴 476 150 450ms 21 days ago 758th JesseNoEyes 🇺🇸 472 169 10ms 1 Oct 2024 759th luca1339 472 198 371ms 4 Nov 2024 760th Maximizer02 471 201 11ms 1 Oct 2024 761st iczelia 🇩🇪 470 94 2ms 23 Sep 2025 762nd ejini6969 469 102 37ms 14 Jun 2025 763rd zyc-2024 🇨🇳 469 170 9ms 5 Oct 2024 764th ComputerKWasTaken 🇺🇸 466 171 10ms 14 Oct 2024 765th snoozingnewt 🇨🇦 466 200 216ms 2 Nov 2025 766th snoozingnewt 🇨🇦 464 121 197ms 27 Nov 2025 767th Jacob385 462 202 358ms 2 Oct 2024 768th navier-1 461 173 11ms 22 Sep 2025 769th snoozingnewt 🇨🇦 460 96 2ms 2 Nov 2025 770th madex 🇩🇪 460 104 38ms 2 Oct 2024 771st TheZwierzLF 🇵🇱 455 105 38ms 14 days ago 772nd snoozingnewt 🇨🇦 454 149 4ms 2 Nov 2025 773rd IISResetMe 453 103 590ms 27 Nov 2025 774th clayboll99 453 176 10ms 10 Jul 2025 775th dokutan 451 63 3ms 26 Nov 2024 776th snoozingnewt 🇨🇦 450 176 2ms 2 Nov 2025 777th muser-logiccpu 🇺🇦 450 177 17ms 9 Aug 2025 778th varhammer 🇷🇺 450 223 11ms 23 Feb 2025 779th OSYCh314 🇦🇺 448 178 10ms 2 Nov 2024 780th dokutan 445 109 10ms 19 Oct 2024 781st grey0ut 444 105 472ms 11 Jan 2025 782nd calum12345 443 180 10ms 26 Mar 2025 783rd MyXoToD 🇩🇪 441 146 9ms 26 May 2025 784th Yewzir 🇧🇪 440 171 13ms 26 Dec 2024 785th CheeseCake628 🇳🇴 439 151 497ms 18 Oct 2025 786th zt14427 438 182 10ms 27 Dec 2024 787th IoLimmer 435 183 9ms 10 Oct 2024 788th JOrE20 🇺🇸 434 136 754ms 7 Dec 2025 789th KatieLG 🇬🇧 433 183 2ms 2 Oct 2025 790th aksyristos 433 184 16ms 15 Nov 2024 791st snoozingnewt 🇨🇦 432 267 28ms 18 Dec 2025 792nd KatieLG 🇬🇧 431 108 6ms 13 Oct 2024 793rd snoozingnewt 🇨🇦 431 111 38ms 2 Nov 2025 794th estomagordo 🇳🇱 428 186 10ms 15 Jul 2025 795th dokutan 425 132 302ms 3 Oct 2024 796th MeWhenI 🇻🇦 424 143 6ms 2 Oct 2024 797th Arkadios200 417 196 98ms 21 Oct 2025 798th aksyristos 410 172 2ms 23 Nov 2025 799th dieggsy 406 247 18ms 10 Oct 2024 800th snoozingnewt 🇨🇦 406 313 40ms 2 Nov 2025 First Prev 721–800 of 868 Next Last