Card Number Validation in Python 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 Continued Fractions 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 Multitap Input 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 Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus Connect Four 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 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 ><> ALGOL 68 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 APL ArkScript Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Lily Luau Odin Picat Qore Racket Rebol Rexx Scala Squirrel Stax Uiua Umka Vala Vyxal Bytes Chars Scoring Bytes Chars Language All ><> ALGOL 68 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 APL ArkScript Arturo Befunge BQN CJam CoffeeScript Egel Fennel Harbour Hare Haxe Hush Hy iogii Knight Lily 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 Continued Fractions 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 Multitap Input 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 Alphabetic Numbers Apéry’s Constant Binary Lambda Calculus Connect Four 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 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 160th mathisfun271 576 144 10ms 14 Oct 2024 160th bob-th 576 144 10ms 22 Oct 2024 163rd JunkIce 572 145 10ms 3 Dec 2024 164th croc54 568 146 10ms 15 Dec 2024 165th PyryL 🇫🇮 565 147 10ms 1 Mar 2025 166th mbittner20 561 148 10ms 13 Oct 2024 166th YAJUE114514 561 148 10ms 12 Dec 2025 168th psaban 557 149 15ms 31 Jul 2025 168th TheZwierzLF 🇵🇱 557 149 11ms 24 Nov 2025 168th RodAlc24 🇪🇸 557 149 17ms 15 days ago 171st FlorianCassayre 🇫🇷 553 150 18ms 1 Oct 2024 171st jameswmccarty 553 150 10ms 5 Oct 2024 171st yousefalizadeh 553 150 10ms 23 Oct 2024 171st feherd 553 150 11ms 31 Oct 2024 171st kadamkaustubh 553 150 10ms 8 Nov 2025 176th adamnielson42 🇺🇸 546 152 10ms 6 Oct 2024 176th voidgloom 546 152 10ms 22 Oct 2024 176th omero-san 546 152 10ms 22 Sep 2025 176th brochmann 🇸🇪 546 152 10ms 12 Oct 2025 180th xyangst 542 153 11ms 1 Oct 2024 180th denisfouchard 542 153 10ms 21 Aug 2025 182nd osNiko 🇧🇷 539 154 9ms 21 Aug 2025 183rd robin-scragg 535 155 11ms 21 Aug 2025 183rd celiendonze 🇨🇭 535 155 10ms 17 Oct 2025 183rd aksyristos 535 155 10ms 16 hours ago 186th travisdoesmath 532 156 10ms 7 Sep 2025 186th Shotokhan 532 156 10ms 21 Sep 2025 188th lhulinsky 529 157 10ms 21 Oct 2024 189th ThatAlo 525 158 10ms 9 Dec 2024 190th webmiche 522 159 11ms 3 Nov 2025 191st CheeseCake628 🇳🇴 519 160 104ms 5 Nov 2024 192nd pres-abhisheksinha 516 161 10ms 8 Oct 2024 193rd ibixina 512 162 11ms 13 Oct 2024 193rd TheAtrossian 512 162 11ms 5 Jan 2025 195th Vaekor 503 165 11ms 15 Dec 2024 196th JesseNoEyes 🇺🇸 491 169 11ms 1 Oct 2024 197th zyc-2024 🇨🇳 488 170 10ms 5 Oct 2024 198th ComputerKWasTaken 🇺🇸 485 171 10ms 14 Oct 2024 199th navier-1 480 173 10ms 22 Sep 2025 200th clayboll99 472 176 10ms 10 Jul 2025 201st muser-logiccpu 🇺🇦 469 177 18ms 9 Aug 2025 202nd OSYCh314 🇦🇺 466 178 10ms 2 Nov 2024 203rd calum12345 461 180 10ms 26 Mar 2025 204th zt14427 456 182 11ms 27 Dec 2024 205th IoLimmer 454 183 10ms 10 Oct 2024 206th estomagordo 🇳🇱 446 186 10ms 15 Jul 2025 207th gautambp 381 218 11ms 24 Jun 2025 208th Zhenyu-Bo 364 228 11ms 30 Jul 2025 209th EthanJantz 361 230 11ms 5 Sep 2025 210th RobertBurs 350 237 10ms 22 Sep 2025 211th TJK-S 344 241 11ms 25 Oct 2025 211th NoneTheFewer 344 241 11ms 25 Dec 2025 213th te-chnical 322 258 219ms 4 May 2025 214th arebbsba 280 296 11ms 9 Jan 2025 215th kasarino 278 299 11ms 8 Feb 2026 216th benanlam 259 320 10ms 21 Dec 2025 217th AidanWalter 154 540 10ms 1 Jan 2025 218th bignamehyp 124 667 10ms 14 Nov 2024 First Prev 161–218 of 218