Fermat dies in 1665 – his last theorem is unsolved
↓
⏳88 y
↓
Euler proves it for n=3
↓
⏳72 y
↓
Legendre & Dirichlet prove it for n=5
↓
⏳14 y
↓
Lamé proves it for n=7
↓
⏳69 y
↓
Wolfskehl offers prize for solution in the next 100 years
↓
⏳86 y
↓
Wiles proves it 🎉 pic.twitter.com/cFpYIHpMF0

— Fermat's Library (@fermatslibrary) January 20, 2020