John Pollard
John M. Pollard (? - ) British mathematician, best known for devising various integer factorization algorithms, such as Pollard’s method (http://planetmath.org/PollardsP1Algorithm) and Pollard’s method. Pollard has Erdős number (http://planetmath.org/ErdHosNumber) 3: he coauthored with Hendrik W. Lenstra Jr. (and others) a paper of the number field sieve in Lecture Notes in Math., 1554, who collaborated with Jeffrey Shallit on a paper on continued fractions for Math. Comp. 61, who co-authored with Erdős “New bounds on the length of finite Pierce and Engel series” in Sém. Théor. Nombres Bordeaux 2 3.