is it true that there **exist at least** a prime $P$ of the form...












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Given $k+1$ different prime numbers: $p_0,p_1,...,p_k$, with $p_0=2$ and $k>0$, is it true that there exist at least a prime $P$ such that all prime divisors of $P-1$ are only $p_0,p_1,...,p_k$ ? In other words, is it true that there is a prime $P$ of the form $p_0^{alpha_0}p_1^{alpha_1}p_2^{alpha_2}...p_k^{alpha_k}+1$ ?



I know this should be an open problem if I asked there exist infinitely many primes $P$ (I have asked here: is it true that there are infinitely many primes $P$ of the form $p_0^{alpha_0}p_1^{alpha_1}p_2^{alpha_2}...p_k^{alpha_k}+1$? , I may delete this question), since it is unclear whether there are infinitely many primes of the form $2^alpha +1$ or not (Fermat's prime). However, there is a least a prime of the form $2^alpha +1$, is $5$.



(Please let me know if this question is off-topic or should be closed)










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    1












    $begingroup$


    Given $k+1$ different prime numbers: $p_0,p_1,...,p_k$, with $p_0=2$ and $k>0$, is it true that there exist at least a prime $P$ such that all prime divisors of $P-1$ are only $p_0,p_1,...,p_k$ ? In other words, is it true that there is a prime $P$ of the form $p_0^{alpha_0}p_1^{alpha_1}p_2^{alpha_2}...p_k^{alpha_k}+1$ ?



    I know this should be an open problem if I asked there exist infinitely many primes $P$ (I have asked here: is it true that there are infinitely many primes $P$ of the form $p_0^{alpha_0}p_1^{alpha_1}p_2^{alpha_2}...p_k^{alpha_k}+1$? , I may delete this question), since it is unclear whether there are infinitely many primes of the form $2^alpha +1$ or not (Fermat's prime). However, there is a least a prime of the form $2^alpha +1$, is $5$.



    (Please let me know if this question is off-topic or should be closed)










    share|cite|improve this question









    $endgroup$















      1












      1








      1


      2



      $begingroup$


      Given $k+1$ different prime numbers: $p_0,p_1,...,p_k$, with $p_0=2$ and $k>0$, is it true that there exist at least a prime $P$ such that all prime divisors of $P-1$ are only $p_0,p_1,...,p_k$ ? In other words, is it true that there is a prime $P$ of the form $p_0^{alpha_0}p_1^{alpha_1}p_2^{alpha_2}...p_k^{alpha_k}+1$ ?



      I know this should be an open problem if I asked there exist infinitely many primes $P$ (I have asked here: is it true that there are infinitely many primes $P$ of the form $p_0^{alpha_0}p_1^{alpha_1}p_2^{alpha_2}...p_k^{alpha_k}+1$? , I may delete this question), since it is unclear whether there are infinitely many primes of the form $2^alpha +1$ or not (Fermat's prime). However, there is a least a prime of the form $2^alpha +1$, is $5$.



      (Please let me know if this question is off-topic or should be closed)










      share|cite|improve this question









      $endgroup$




      Given $k+1$ different prime numbers: $p_0,p_1,...,p_k$, with $p_0=2$ and $k>0$, is it true that there exist at least a prime $P$ such that all prime divisors of $P-1$ are only $p_0,p_1,...,p_k$ ? In other words, is it true that there is a prime $P$ of the form $p_0^{alpha_0}p_1^{alpha_1}p_2^{alpha_2}...p_k^{alpha_k}+1$ ?



      I know this should be an open problem if I asked there exist infinitely many primes $P$ (I have asked here: is it true that there are infinitely many primes $P$ of the form $p_0^{alpha_0}p_1^{alpha_1}p_2^{alpha_2}...p_k^{alpha_k}+1$? , I may delete this question), since it is unclear whether there are infinitely many primes of the form $2^alpha +1$ or not (Fermat's prime). However, there is a least a prime of the form $2^alpha +1$, is $5$.



      (Please let me know if this question is off-topic or should be closed)







      number-theory






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      asked Dec 14 '18 at 16:48









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