1 )Calculate: http://www.mathramz.com/xyz/latexren...6c40fc1a94.png

2 ) Deduct : the number 103121 is prime number.

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- Jun 4th 2009, 11:54 PMdhiabPrime number
1 )

**Calculate**: http://www.mathramz.com/xyz/latexren...6c40fc1a94.png

**2 ) Deduct : the number 103121 is prime number.** - Jun 5th 2009, 12:45 AMAmer
for the first one

- Jun 5th 2009, 12:54 AMgreat_math

A answer without calculators will be highly appreciated..

I used a calculator - Sep 28th 2009, 10:11 PMpacman
http://www.mathhelpforum.com/math-he...6dd01965-1.gif; if x = 10, then (10^3 + 2(10) + 1)(10^2 + 1) = (1021)(101) = 103121