Aurifeuillian Factorization/Examples/2^4n+2 + 1/Historical Note

Historical Note on Aurifeuillian Factorization of $2^{4 n + 2} + 1$
According to in his  of $1997$, this identity was established by, who generalised the result:
 * $2^{58} + 1 = \left({2^{29} - 2^{15} + 1}\right) \left({2^{29} + 2^{15} + 1}\right)$

which had been discovered by in $1871$.