document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=4871>Question 4871</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Is 191 a prime number.How do i find out? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #2388 by </B><A HREF=/tutors/aboutme.mpl?userid=rapaljer><B>rapaljer(4671)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=rapaljer><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=rapaljer><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=2388\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> First find the <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=sqrt+%28191%29+ ALIGN=MIDDLE  ALT=\"sqrt+%28191%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" > and find that it is a number between 13 and 14, since <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=13%5E2+=+169 ALIGN=MIDDLE  ALT=\"13%5E2+=+169\"   DISABLED_style= \"max-width:90%; height:auto;\" > and <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=13%5E2+=+196 ALIGN=MIDDLE  ALT=\"13%5E2+=+196\"   DISABLED_style= \"max-width:90%; height:auto;\" >.  \r<BR>\n" );
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document.write( "Now you must divide 191 by each prime number up to and including 14, and show that 191 is NOT divisible by any of those numbers.  Since 191 is NOT divisible by 2, 3, 5, 7, 11, or 13, this is a prime number.\r<BR>\n" );
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document.write( "R^2 at SCC </SPAN>\n" );
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