Here :
it is indirectly claimed that there exists a number $n$, such that $n+k$ has a prime factor $p\le 97$ for $k=0,1,2,...,256$.
Despite great effort, I could not find such a number.
How can I construct such a number ?
What is the smallest number $n$ doing the job ?
How can I show that at least one of the numbers $n,n+1,...,n+257$ is coprime to $100!$ for every $n$ ?