Cullen numbers

In that sense, almost all Cullen numbers are composite.

Woodall numbers are sometimes called Cullen numbers of the second kind.

Cullen numbers were first studied by Fr.

Cullen numbers are special cases of Proth numbers.

James Cullen, mathematician who discovered what are now known as the Cullen numbers.

Like Cullen numbers, Woodall numbers have many divisibility properties.

James Cullen, S.J., begins the study of Cullen numbers.

He has also studied Cunningham numbers, Cullen numbers, Woodall numbers, etc., and numbers of the form , which are now called Leyland numbers.

In 1905, he taught mathematics at Mount St. Mary's College in Derbyshire and published his finding of what is now known as Cullen numbers in number theory.

Woodall numbers were first studied by Allan J. C. Cunningham and H. J. Woodall in 1917, inspired by James Cullen's earlier study of the similarly-defined Cullen numbers.