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 Andrey2001 502 132 629ms 27 Nov 2025 722nd msbranicky 501 138 3ms 3 Oct 2024 723rd webmiche 501 159 10ms 3 Nov 2025 724th blaztoma 🇱🇹 500 154 125ms 28 Nov 2025 725th jlangvand 499 141 2ms 15 Oct 2024 725th HumanoidCPU 499 141 1ms 7 Mar 2025 727th MeWhenI 🇻🇦 499 149 55ms 4 Oct 2024 728th janAkali 🇷🇺 499 167 357ms 8 Oct 2024 729th Mabeloid 🇳🇴 498 133 566ms 2 Oct 2024 730th CheeseCake628 🇳🇴 498 160 102ms 5 Nov 2024 731st osNiko 🇧🇷 496 73 50ms 3 days ago 732nd pres-abhisheksinha 495 161 10ms 8 Oct 2024 733rd HumanoidCPU 492 145 394ms 5 Oct 2024 734th CarterStroik 492 161 2ms 19 Nov 2025 735th ibixina 492 162 9ms 13 Oct 2024 735th TheAtrossian 492 162 10ms 5 Jan 2025 737th TheRealOhead 🇺🇸 491 131 14ms 1 Oct 2024 738th snoozingnewt 🇨🇦 490 150 154ms 2 Nov 2025 739th JunkIce 487 136 563ms 3 Dec 2024 740th h-hh-hhh 🇺🇦 487 177 65ms 2 Nov 2024 741st snoozingnewt 🇨🇦 487 249 26ms 2 Nov 2025 742nd snoozingnewt 🇨🇦 486 117 904ms 2 Nov 2025 743rd Vaekor 483 165 10ms 15 Dec 2024 744th snoozingnewt 🇨🇦 482 173 332ms 2 Nov 2025 745th alphafalfa 480 92 2ms 8 Nov 2024 746th mitzal 479 180 66ms 9 Feb 2025 747th h-hh-hhh 🇺🇦 478 147 2ms 2 Nov 2024 748th MiffOttah 476 150 431ms 6 Oct 2024 748th mwarvik 🇳🇴 476 150 421ms 60 mins ago 750th JesseNoEyes 🇺🇸 472 169 10ms 1 Oct 2024 751st luca1339 471 198 371ms 4 Nov 2024 752nd Maximizer02 471 201 10ms 1 Oct 2024 753rd iczelia 🇩🇪 470 94 2ms 23 Sep 2025 754th zyc-2024 🇨🇳 469 170 9ms 5 Oct 2024 755th ejini6969 468 102 37ms 14 Jun 2025 756th ComputerKWasTaken 🇺🇸 466 171 10ms 14 Oct 2024 757th snoozingnewt 🇨🇦 466 200 228ms 2 Nov 2025 758th snoozingnewt 🇨🇦 464 121 252ms 27 Nov 2025 759th Jacob385 462 202 358ms 2 Oct 2024 760th navier-1 461 173 11ms 22 Sep 2025 761st snoozingnewt 🇨🇦 460 96 2ms 2 Nov 2025 762nd madex 🇩🇪 459 104 39ms 2 Oct 2024 763rd snoozingnewt 🇨🇦 454 149 6ms 2 Nov 2025 764th IISResetMe 453 103 490ms 27 Nov 2025 765th clayboll99 453 176 10ms 10 Jul 2025 766th dokutan 451 63 3ms 26 Nov 2024 767th snoozingnewt 🇨🇦 450 176 2ms 2 Nov 2025 768th Upload-and-View 🇺🇦 450 177 17ms 9 Aug 2025 769th varhammer 🇷🇺 450 223 11ms 23 Feb 2025 770th OSYCh314 🇦🇺 448 178 10ms 2 Nov 2024 771st dokutan 445 109 10ms 19 Oct 2024 772nd grey0ut 444 105 425ms 11 Jan 2025 773rd calum12345 443 180 10ms 26 Mar 2025 774th MyXoToD 🇩🇪 441 146 9ms 26 May 2025 775th Yewzir 🇧🇪 440 171 12ms 26 Dec 2024 776th CheeseCake628 🇳🇴 439 151 497ms 18 Oct 2025 777th zt14427 438 182 10ms 27 Dec 2024 778th IoLimmer 435 183 9ms 10 Oct 2024 779th JOrE20 🇺🇸 434 136 754ms 25 days ago 780th KatieLG 🇬🇧 433 183 2ms 2 Oct 2025 781st aksyristos 433 184 16ms 15 Nov 2024 782nd snoozingnewt 🇨🇦 432 267 28ms 14 days ago 783rd KatieLG 🇬🇧 431 108 6ms 13 Oct 2024 784th snoozingnewt 🇨🇦 430 111 34ms 2 Nov 2025 785th estomagordo 🇳🇱 428 186 10ms 15 Jul 2025 786th dokutan 425 132 323ms 3 Oct 2024 787th MeWhenI 🇻🇦 424 143 6ms 2 Oct 2024 788th Arkadios200 417 196 98ms 21 Oct 2025 789th aksyristos 409 172 2ms 23 Nov 2025 790th dieggsy 406 247 18ms 10 Oct 2024 791st snoozingnewt 🇨🇦 406 313 40ms 2 Nov 2025 792nd Mabeloid 🇳🇴 405 159 13ms 12 Oct 2024 793rd snoozingnewt 🇨🇦 404 223 75ms 2 Nov 2025 794th Ralac07 🇦🇺 397 162 11ms 3 Oct 2024 795th snoozingnewt 🇨🇦 392 276 40ms 25 days ago 796th ehulinsky 🇺🇸 384 158 5ms 2 Apr 2025 797th fischfood 384 176 5ms 22 Oct 2024 798th c0d3-4-F00d 🇩🇪 382 184 2ms 9 Jan 2025 799th snoozingnewt 🇨🇦 376 267 13ms 2 Nov 2025 800th KatieLG 🇬🇧 375 218 108ms 21 Nov 2025 First Prev 721–800 of 854 Next Last