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Old 2008-10-27, 03:48   #6
Oleg V.Cat
 
Oct 2008
Riga, Latvia

11 Posts
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Quote:
Originally Posted by Jens K Andersen View Post
You appear to include 1 in the primes. This is rarely done today.
Yep, I re-read the definition. Prime numbers must have two different dividers, not one .

Quote:
Originally Posted by Jens K Andersen View Post
numbers included 133028062963 which is the smallest prime where a prime-making digit can be appended 14 times, ending with 13302806296379339933399333. Can you find a 15?
Oh, no... I am not so addicted to primes
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