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Search: id:A113969
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| A113969 |
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The first illegal prime number (beginning of the 1401 digits of its digital expansion). |
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+0
2
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| 4, 8, 5, 6, 5, 0, 7, 8, 9, 6, 5, 7, 3, 9, 7, 8, 2, 9, 3, 0, 9, 8, 4, 1, 8, 9, 4, 6, 9, 4, 2, 8, 6, 1, 3, 7, 7, 0, 7, 4, 4, 2, 0, 8, 7, 3, 5, 1, 3, 5, 7, 9, 2, 4, 0, 1, 9, 6, 5, 2, 0, 7, 3, 6, 6, 8, 6, 9, 8, 5, 1, 3, 4, 0, 1, 0, 4, 7, 2, 3, 7, 4, 4, 6, 9, 6, 8, 7, 9, 7, 4, 3, 9, 9, 2, 6, 1, 1, 7, 5, 1, 0, 9, 7, 3
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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The first illegal prime number was generated on March 2001 by Phil Carmody. Its binary representation corresponds to a 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. 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. Phil Carmody generated also other illegal primes; one of them (1811 digits) represents a non-compressed executable that performs the same task as this compressed program. (cf. A113970)
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REFERENCES
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David Wells, Prime numbers, John Wiley and Sons, Inc. (2005), p. 127.
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LINKS
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Wikipedia, DeCSS.
Wikipedia, Illegal prime.
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CROSSREFS
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Cf. A113970.
Sequence in context: A019192 A133921 A021210 this_sequence A021677 A124193 A011366
Adjacent sequences: A113966 A113967 A113968 this_sequence A113970 A113971 A113972
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KEYWORD
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base,easy,fini,nonn
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AUTHOR
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Alexandre Wajnberg (alexandre.wajnberg(AT)skynet.be), Jan 31 2006
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