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 a Christmas puzzle by bertoldo 
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Posted on: Mon Dec 30, 2013 1:49 pm




Posts: 2194
Joined: Thu May 12, 2011 11:58 pm
Post Re: a Christmas puzzle by bertoldo
clm wrote:
It is true that in a not very far past the 1 was considered a prime (and taught so); in this way, for instance, the Goldbach's conjecture (that every even integer greater than two is the sum of two different primes) looks more consistent: 4 = 3 + 1, 6 = 5 + 1, ... Particularly myself I would prefer to have the 1 among the primes

Slowly but surely calcudoku.org is becoming a math reference anyway,
so if this site says that 1 is a prime, then it is a prime [mad]


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