One of the top number theorists of our time, Carl Pomerance received his PhD from Harvard University in 1972 and immediately joined the faculty at the University of Georgia, becoming full professor in 1982. He has won many teaching and research awards, including the Chauvenet Prize in 1985, MAA's distinguished university teaching award in 1997, and the Conant Prize in 2001. He has over 120 publications to his credit, including co-authorship with R. Crandell of "Prime numbers: a computational perspective", Springer-Verlag, 2001. He is the inventor of one of the most important factorisation methods, the quadratic sieve, which was used in 1994 for the factorisation of RSA-129. Harvard University is a private university in Cambridge, Massachusetts, USA, and a member of the Ivy League. ... The Arch, the gateway to UGAs historic North Campus. ... This article is about the mathematical concept. ... The quadratic sieve algorithm (QS) is a modern integer factorization algorithm and, in practice, the second fastest method known. ... In mathematics, RSA-129 is one of the RSA numbers, large semiprimes that are part of the RSA Factoring Challenge. ...