I made a factorial calculator program that calculates factorials of positive integers in a not veey big code and a not very high effort and not very exact calculation result, and it's getting larger difference from the exact values when the number gets larger (at least 4 starting digits of 3628800! is accurate, and only 1 starting digit on 1,000,000,000! (calculated by @KrazyMan79 in this) is accurate, that even the beginning 12 digits aren't exact but close), sorry if you want an exact value for big factorials, i put the first 13 digits of the approximation instead of 4 or lower because it's likely closer to the exact value than if it's just the first 4 digits, and it takes more than 1 second but less than 10 seconds to calculate 3628800!, might take less than 1 hour to calculate 1000000000! This program can only calculate single factorials, not double factorials or more (skip counting numbers to multiply, like 16!!=2×4×6×8×10×12×14×16) I used the exponent symbol (^) rather than superscripts (⁰¹²³⁴⁵⁶⁷⁸⁹) because it is more simple and some phones doesn't put superscripts on their keyboard If the title has "(IN UPDATE)", it means the program is updating, it might look "unfinished", however the codes will stay if changes aren't needed to them, to make the calculator remain usable Updates (the numbers represent the times the program is updated to give these things): 1. Changed some things some seconds or minute after the program is released 2. Fixing it by deleting unneeded programs and fixing some word joining 3. Adding some codes and changed the background 4. Changed the background again and put credits and credit notes 5. Added a note for the calculator's accuracy 6. Added some more codes and credit notes Note: The background isn't a reference to any sequence band This program is a honest serious program, not a joke program
INACCURACIES: 1!-18! are 100% accurate 1,000,000,000! is actually 990462657922...×10^(?) calculated approximately as 989397628...×10^(?) ((?) is an unknown value as it is not said, but the (?) in the exact value and the approximation is the exact same), in this, the inaccuracy is about 1.065029...×10^((?)-2) or about 0,0010752844 or 0,10752844% lower than the exact value, so it is about 0,9989247156 or 99,89247156% accurate (1,000,000,000! calculated in this by ) for some codes kinda low budget program for big factorials /j
