document.write( "Question 519324: If you multiply all the prime numbers less than 100,000 what is the units' digit of the product? \n" ); document.write( "
Algebra.Com's Answer #345534 by Edwin McCravy(20056)\"\" \"About 
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If you multiply all the prime numbers less than 100,000 what is the units' digit of the product?
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document.write( "2×3×5×7×11×13×17×19×···×99923×99929×99961×99971×99989×99991\r\n" );
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document.write( "Since 2 and 5 are factors of that huge number, so is 10, and every\r\n" );
document.write( "integer of which 10 is a factor ends in 0.  And the units digit of\r\n" );
document.write( "any integer is the digit it ends in.  Answer: 0\r\n" );
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document.write( "Edwin
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