document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=476631>Question 476631</A>: <I><SPAN STYLE=\"word-break: break-all;\"> weather 287,1369 and 2511 are primes or not? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #326816 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=326816\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> wheather 287,1369 and 2511 are primes or not?<BR>\n" );
document.write( "--------<BR>\n" );
document.write( "Example<BR>\n" );
document.write( "sqrt(2511) = 50.11..<BR>\n" );
document.write( "So you only need to check division of <BR>\n" );
document.write( "2511 by primes that are less than 50<BR>\n" );
document.write( "--<BR>\n" );
document.write( "Those primes are 47,43,41,37,31,...etc<BR>\n" );
document.write( "I tried those and found 2511 = 31*81<BR>\n" );
document.write( "--<BR>\n" );
document.write( "So 2511 is not prime.<BR>\n" );
document.write( "=======================<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
document.write( "========== </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );