Richard E. Crandall is an American computer scientist and physicist who has made contributions to computational number theory, most notably the development of the irrational base discrete weighted transform, an important method of finding very large primes. The United States of America —commonly referred to as the A computer scientist is a person that has acquired knowledge of Computer science, the study of the theoretical foundations of information and computation and their application In Mathematics, computational number theory, also known as algorithmic number theory, is the study of Algorithms for performing number theoretic In Mathematics, the irrational base discrete weighted transform (IBDWT is a variant of the Fast Fourier transform using an irrational base it was developed He has, at various times, been Chief Scientist at NeXT Inc. NeXT Computer Inc (later NeXT Software Inc) was an American Computer company headquartered in Redwood City, California that and Apple's Chief Cryptographer. Apple Inc, ( formerly Apple Computer Inc, is an American Multinational corporation with a focus on designing and manufacturing Consumer electronics He is currently Vollum Adjunct Professor of Science and director of the Center for Advanced Computation at Reed College. Reed College is a private, independent Liberal arts college located in southeast Portland Oregon.