Sierpinski problem with prime powers
has an interesting variant on the Sierpinski problem
from Sun Zhi-Wei (of Wall-Sun-Sun fame).
- Comment: Since Payam's PrP 19249+2^551542
is effectively unprovable, Prof. Sun Zhi-Wei's
appeal is essentially directed at SoB,
telling them that if/when k*2^n+1 is cracked for both
k=19249 and k=67607 then the person contributing
the last relevant SoB cycle gets a publication, I guess?
But then the second author might be anonymous, as in