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 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 NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Tower of Hanoi Turtle Tutorial All Languages ><> Assembly AWK Bash BASIC Berry brainfuck C C# C++ Civet Clojure COBOL Coconut Common Lisp Crystal D Dart Elixir 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 Erlang 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 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 Erlang 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 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 NFA Simulator Odd Polyomino Tiling p-adic Expansion Polygon Triangulations QR Encoder Quadratic Formula Semiprime Numbers Smooth Numbers Snake Sphenic Numbers Tower of Hanoi Turtle Tutorial # Golfer Points Bytes Time Submitted 676th galloj 🇨🇿 522 112 27ms 4 Oct 2024 677th xyangst 521 153 10ms 1 Oct 2024 677th denisfouchard 521 153 11ms 21 Aug 2025 679th snoozingnewt 🇺🇸 519 213 119ms 22 days ago 680th bac0id 518 180 306ms 9 Jan 2025 681st osNiko 🇧🇷 517 154 22ms 21 Aug 2025 682nd sidok 515 109 275ms 13 Nov 2024 683rd FortuiteMan 🇫🇷 514 155 16ms 16 Oct 2024 683rd mossiegoat 514 155 13ms 21 Aug 2025 683rd celiendonze 🇨🇭 514 155 11ms 17 Oct 2025 686th dokutan 512 143 128ms 19 Oct 2024 687th nephila-nacrea 🇬🇧 510 77 4ms 2 Oct 2024 688th travisdoesmath 510 156 10ms 7 Sep 2025 688th Shotokhan 510 156 9ms 21 Sep 2025 690th yoshykai 510 183 309ms 12 Apr 2025 691st KatieLG 🇬🇧 509 140 358ms 1 Oct 2024 692nd KatieLG 🇬🇧 509 146 8ms 2 Oct 2024 693rd dokutan 507 126 134ms 22 Jun 2025 694th Chinay-Domitrix 🇺🇸 507 131 3,120ms 30 Mar 2025 695th lhulinsky 507 157 10ms 21 Oct 2024 696th dokutan 506 116 726ms 30 Aug 2025 697th ThatAlo 504 158 10ms 9 Dec 2024 698th TheZwierzLF 🇵🇱 501 132 448ms 19 hours ago 699th msbranicky 501 138 3ms 3 Oct 2024 700th snoozingnewt 🇺🇸 501 142 379ms 22 days ago 701st webmiche 501 159 10ms 22 days ago 702nd MeWhenI 🇻🇦 499 149 42ms 4 Oct 2024 703rd janAkali 🇷🇺 499 167 335ms 8 Oct 2024 704th Mabeloid 🇳🇴 498 133 549ms 2 Oct 2024 705th jlangvand 498 141 1ms 15 Oct 2024 705th HumanoidCPU 498 141 2ms 7 Mar 2025 707th CheeseCake628 🇳🇴 498 160 99ms 5 Nov 2024 708th pres-abhisheksinha 495 161 9ms 8 Oct 2024 709th StronkCheese2 493 161 2ms 6 days ago 710th ibixina 492 162 10ms 13 Oct 2024 710th TheAtrossian 492 162 10ms 5 Jan 2025 712th TheRealOhead 🇺🇸 491 131 13ms 1 Oct 2024 713th HumanoidCPU 491 145 388ms 5 Oct 2024 714th snoozingnewt 🇺🇸 488 150 135ms 22 days ago 715th JunkIce 487 136 560ms 3 Dec 2024 716th snoozingnewt 🇺🇸 486 117 940ms 22 days ago 717th h-hh-hhh 🇺🇦 485 177 58ms 2 Nov 2024 718th Vaekor 483 165 9ms 15 Dec 2024 719th snoozingnewt 🇺🇸 483 249 27ms 22 days ago 720th snoozingnewt 🇺🇸 482 173 353ms 22 days ago 721st alphafalfa 480 92 2ms 8 Nov 2024 722nd h-hh-hhh 🇺🇦 478 147 2ms 2 Nov 2024 723rd ravnskjaer 🇩🇰 478 195 306ms 20 Dec 2024 723rd snoozingnewt 🇺🇸 478 195 370ms 22 days ago 725th mitzal 477 180 58ms 9 Feb 2025 726th MiffOttah 475 150 369ms 6 Oct 2024 727th JesseNoEyes 🇺🇸 471 169 10ms 1 Oct 2024 728th luca1339 471 198 302ms 4 Nov 2024 729th Maximizer02 471 201 11ms 1 Oct 2024 730th iczelia 🇩🇪 470 94 3ms 23 Sep 2025 731st ejini6969 468 102 35ms 14 Jun 2025 732nd zyc-2024 🇨🇳 468 170 10ms 5 Oct 2024 733rd ComputerKWasTaken 🇺🇸 466 171 9ms 14 Oct 2024 734th snoozingnewt 🇺🇸 465 200 230ms 22 days ago 735th Yewzir 🇧🇪 463 171 12ms 26 Dec 2024 736th Jacob385 462 202 298ms 2 Oct 2024 737th snoozingnewt 🇺🇸 460 96 2ms 22 days ago 738th navier-1 460 173 10ms 22 Sep 2025 739th madex 🇩🇪 459 104 36ms 2 Oct 2024 740th snoozingnewt 🇺🇸 454 149 5ms 22 days ago 741st snoozingnewt 🇺🇸 453 124 228ms 22 days ago 742nd clayboll99 452 176 11ms 10 Jul 2025 743rd dokutan 451 63 3ms 26 Nov 2024 744th snoozingnewt 🇺🇸 451 176 2ms 22 days ago 745th Upload-and-View 🇺🇦 450 177 16ms 9 Aug 2025 746th varhammer 🇷🇺 450 223 12ms 23 Feb 2025 747th IISResetMe 449 104 474ms 27 Mar 2025 748th OSYCh314 🇦🇺 447 178 11ms 2 Nov 2024 749th dokutan 445 109 10ms 19 Oct 2024 750th grey0ut 444 105 415ms 11 Jan 2025 First Prev 676–750 of 826 Next Last