document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=336088>Question 336088</A>: <I><SPAN STYLE=\"word-break: break-all;\"> What is the largest prime factor of 1 + 2 + 3 + 4 + 5 + ... + 60? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #241020 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=241020\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> What is the largest prime factor of 1 + 2 + 3 + 4 + 5 + ... + 60?<BR>\n" );
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document.write( "Use S(n)=(n/2)(1st + last) to get the sum.<BR>\n" );
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document.write( "S(60) = (60/2)(1+60) = 30*61 = 1830<BR>\n" );
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document.write( "Now find the largest prime factor in 1830<BR>\n" );
document.write( "Divide by 2 till you can't.<BR>\n" );
document.write( "Then divide by 3 till you can't.<BR>\n" );
document.write( "Then by 5<BR>\n" );
document.write( "Then by 7<BR>\n" );
document.write( "etc.<BR>\n" );
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document.write( "I get an answer of 61<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
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