> With this optimization, the values of n, e and d are not required, hence are ignored by typical implementations whenever p, q, dp, dq and qinv are available*

> *at least for OpenSSH, they do not have to be present: setting p=q=1 and dp=dq=qinv=0 makes the implementation use n and d.

https://crypto.stackexchange.com/questions/31807/why-does-my...