Mathematician:R.E. Powers

American amateur mathematician who discovered the 10th and 11th Mersenne primes $2^{89} - 1$ (in 1911) and $2^{107} - 1$ (in 1914.)

In 1916, he determined that $2^{241} - 1$ is composite.

Very little is known about R.E. Powers. He lived in Denver, Colorado from at least 1911 to 1916.

Nationality
American

History

 * Born: Unknown
 * Died: Unknown

Publications

 * in which $M_{89}$ is reported as being prime


 * in which $M_{107}$ is reported as being prime


 * 1916: Certain Composite Mersenne's Numbers


 * in which $M_{241}$ is reported as being composite

Also see
Chris Caldwell's website The Prime Pages.

Links to Powers' original papers.