Tool to search digits or digits patterns (id number, birth date, etc.) in the decimals of some numbers (Pi, e, square root of 2 etc.)

Search in Decimals - dCode

Tag(s) : Mathematics, Fun/Miscellaneous

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A rational or irrational number, can have a decimal representation with an infinite number of digits after the decimal point.

Usual numbers generally have periodic decimal expansion (a series of digits that repeats), but there are an infinity of numbers with an infinity of digits after the decimal point.

Generally, if the number is a relatively random universe number (like π or e or phi, even if it is a conjecture) then it is not possible to predict the position of a number or pattern of digits, the only mean is to browse them in the order.

__Example:__ Search birth date '18/08/1998 'in pi, found in position `794769`.

For dCode, the first decimal `1` in pi = 3.**1**4159 is in position `1`. Other programs use position 0, or position 2 (the digit `3` before the decimal point/dot is then considered as position 1).

dCode knows the decimals up to 1000000 (one million) digits.

A disjuctive number (rich number or universe number) is defined as a real number whose representation contains any combination of numbers.

Mathematicians believe that irrational constants such as $ \pi $ or $ \sqrt{2} $ are universe numbers but this has not yet been proven.

dCode retains ownership of the "Search in Decimals" source code. Except explicit open source licence (indicated Creative Commons / free), the "Search in Decimals" algorithm, the applet or snippet (converter, solver, encryption / decryption, encoding / decoding, ciphering / deciphering, breaker, translator), or the "Search in Decimals" functions (calculate, convert, solve, decrypt / encrypt, decipher / cipher, decode / encode, translate) written in any informatic language (Python, Java, PHP, C#, Javascript, Matlab, etc.) and all data download, script, or API access for "Search in Decimals" are not public, same for offline use on PC, mobile, tablet, iPhone or Android app!

Reminder : dCode is free to use.

The copy-paste of the page "Search in Decimals" or any of its results, is allowed (even for commercial purposes) as long as you credit dCode!

Exporting results as a .csv or .txt file is free by clicking on the *export* icon

Cite as source (bibliography):

*Search in Decimals* on dCode.fr [online website], retrieved on 2024-09-13,

decimal,digit,dot,point,number,constant,date

https://www.dcode.fr/decimal-search

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