Sequence of 9 Primes of form 4n+1/Historical Note
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Historical Note on Sequence of $9$ Primes of form $4 n + 1$
In his Curious and Interesting Numbers of $1986$, David Wells reports that Richard K. Guy discusses this in his Unsolved Problems in Number Theory of $1981$.
In Curious and Interesting Numbers, 2nd ed. of $1997$, he then attributes this result to a certain Den Haan, but gives no context.
It remains to identify who this is.
Sources
- 1986: David Wells: Curious and Interesting Numbers ... (previous) ... (next): $11,593$
- 1997: David Wells: Curious and Interesting Numbers (2nd ed.) ... (previous) ... (next): $11,593$