Hi all
Is a decimal 23-digit numbers 11111111111111111111111 prime ?
Could you tell me the answer with proof?
24-digit numbers 11111111111111111111 = 101*1100110011001100110011
regards
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Hiroshi Kotera
1014-4 Tokujyo-cho
Nara City 630-8144 JAPAN
email : [EMAIL PROTECTED]
http://www.asahi-net.or.jp/~nj7h-ktr/
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