Please forgive for my poor English but I write in my native language

and then I translate. I have solved no1 and i find it terrific and i

have not solved no2.

1)If S is the set of all the secuenses that are finally zero(a(n)=0

for all n>n0) then this set is countable and this can be shown by the

fundamental theorem of number theory(All natural numbers can be

written as a product of prime factors in an unique way)

2)If q is a prime different than 2 then there are infinite primes p

that q is the smallest prime factor of 2*p-1.

My e-mail is

arcsinx@...