- Annals of Combinatorics.
- Bulletin of the American Mathematical Society, Associate Editor of Book Reviews.
- Communications in Number Theory and Physics.
- Contributions to Discrete Mathematics.
- The Encyclopedia of Srinivasa Ramanujan and His Mathematics, Springer, Editor-in-Chief.
- Integers.
- The International Journal of Number Theory.
- Involve.
- Mathematical Intelligencer, Board of Correspondents.
- The Ramanujan Journal.
- Research in the Mathematical Sciences. (Editor-in-Chief)
- Research in Number Theory. (Editor-in-Chief)
- Springer Graduate Texts in Mathematics, Advisory Board (Thru end of 2021)
Advisory Boards
- U.S. National Committee for Mathematics (2010-present), NAS.
- American Association for the Advancement of Science (2020-2023), Section Chair.
- Scientific Advisory Board, Conference Board of the Mathematical Sciences, 2018-2023.