HANOVER, N.H. — Dartmouth College has received an anonymous gift of $100 million, the largest single donation in its 244-year history.

College officials say half of the amount will support the “Cluster Initiative” proposed by President Philip Hanlon, which includes adding 30 to 40 new faculty positions over the next decade.

Professors have been hired by specific departments. Under the new program, professors would be hired under multidisciplinary clusters, such as sustainable energy and financial markets.

Part of the donation is being called a challenge grant, with a goal of raising an additional $100 million in donations.