Mathematicians Who Solved the Most in Their Head

A list of the most prolific math thinkers who didn't bother with paper and pencil.

1. Isaac Newton (1663-1727)

Newton, the original head-solver, figured out gravity with just a few scribbles on a chalkboard.

Read more about Isaac's impressive feats

2. Archimedes (c. 287-225 BCE)

Archimedes, the ancient Greek, was so good at solving in his head that he single-handedly invented the concept of pi.

Learn more about Archimedes' incredible math skills

3. Riemann (1826-1867)

Riemann, the German mathematician, solved complex equations with ease, all while walking his dog.

Discover Riemann's remarkable abilities

4. Euler (1707-1783)

Euler, the Swiss master, figured out calculus with just a few scribbled notes on a napkin.

Read more about Euler's impressive calculations

5. Gauss (177-1855)

Gauss, the German genius, solved complex math problems with his eyes closed and a smile on his face.

Learn about Gauss' incredible math skills