

A113970


The first illegal executable prime number (the 1811 digits of its decimal expansion).


2



4, 9, 3, 1, 0, 8, 3, 5, 9, 7, 0, 2, 8, 5, 0, 1, 9, 0, 0, 2, 7, 5, 7, 7, 7, 6, 7, 2, 3, 9, 0, 7, 6, 4, 9, 5, 7, 2, 8, 4, 9, 0, 7, 7, 7, 2, 1, 5, 0, 2, 0, 8, 6, 3, 2, 0, 8, 0, 7, 5, 0, 1, 8, 4, 0, 9, 7, 9, 2, 6, 2, 7, 8, 8, 5, 0, 9, 7, 6, 5, 8, 8, 6, 4, 5, 5, 7, 8, 0, 2, 0, 1, 3, 6, 6, 0, 0, 7, 3, 2, 8, 6, 7, 9, 5
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OFFSET

1,1


COMMENTS

The first illegal prime number (1401 digits, cf. A113969) was generated on March 2001 by Phil Carmody. Its binary representation corresponds to the compressed version of the C source code of a computer program implementing the DeCSS decryption scheme, making any DVD copy readable with any DVD player. This prime number here (1811 digits) represents a *noncompressed executable* that performs the same task as the compressed program. Interpreted in this particular way, this number describes a computer program which bypasses copyright protection schemes on some DVDs. Such programs are illegal to possess or distribute under the Digital Millennium Copyright Act. Of course, any prime number is not illegal, although such an interpretation of it could be. It's fully displayed in the Wiki link below.


REFERENCES

David Wells, Prime numbers, John Wiley and Sons, Inc. (2005), p. 127.


LINKS

Nathaniel Johnston, Table of n, a(n) for n = 1..1811 (full sequence)
Wikipedia, DeCSS.
Wikipedia, Illegal prime.


CROSSREFS

Cf. A113969.
Sequence in context: A073843 A073842 A136271 * A021957 A096301 A196819
Adjacent sequences: A113967 A113968 A113969 * A113971 A113972 A113973


KEYWORD

base,easy,fini,full,nonn


AUTHOR

Alexandre Wajnberg, Jan 31 2006


STATUS

approved



