document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=624694>Question 624694</A>: <I><SPAN STYLE=\"word-break: break-all;\"> If P+1 = N^2 , then find out the value of P !<BR>\n" );
document.write( "Here , P= prime number & N = Normal number </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #392959 by </B><A HREF=/tutors/aboutme.mpl?userid=oscargut><B>oscargut(2103)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=oscargut><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/cgi-bin/show-face.mpl?user=oscargut><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=392959\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Solution:\r<BR>\n" );
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document.write( "P+1 = N^2\r<BR>\n" );
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document.write( "P = N^2-1\r<BR>\n" );
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document.write( "P = (N-1)(N+1)\r<BR>\n" );
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document.write( "But P is prime then N-1=1 or N+1 = 1\r<BR>\n" );
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document.write( "N-1 = 1 then N=2 and P = 3<BR>\n" );
document.write( "N+1 = 1 then N =0 and P = -1 (not prime)\r<BR>\n" );
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document.write( "Answer:  P = 3\r<BR>\n" );
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document.write( "You can send me more problems to my e-mail:  mthman@gmail.com\r<BR>\n" );
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document.write( " </SPAN>\n" );
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