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Old 03-01-2010, 12:07 PM   #2800
DaleDe
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Quote:
Originally Posted by WT Sharpe View Post
Wow! That's the sum of the digits of the first 100 primes! Congrats!

Also, 1111 = 11 * 101 in base 10 and in base 2, where 11 and 101 are both prime in base 10 and base 2!

Source: http://primes.utm.edu/curios/page.php/1111.html

PS: I checked the base 10/base 2 curiosity. In base 10 notation, that would be 15 = 3 x 5. I'll leave to someone more ambitious to check whether 1111 = the sum of the first hundred primes!
It is not true. The sum of all primes less than 100 is 1060 so there is no way the premise is true.

Dale
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