document.write( "Question 748637: its greater than 100 less than 200 its prime and the sum of its digits is 13 \n" ); document.write( "
Algebra.Com's Answer #455550 by timvanswearingen(106)\"\" \"About 
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157\r
\n" ); document.write( "\n" ); document.write( "You can narrow it down a little. You know the first digit is a 1, the last digit has to be odd for it to be prime, but can't be 1 since the sum of the digits is 13, and the middle digit has to also be odd for the sum of the digits to be 13.
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