N Is a Number: A Portrait of Paul Erdős is a 1993 documentary directed by George Paul Csicsery about the life of mathematician Paul Erdős.
Erdős himself appears in the film. As of 2007, using the official cast list in the credits, it gives Erdős a Bacon number (and thus Erdős-Bacon number) of 4. However, Sir Alec Guinness, identified by name by the narrator, appears in the film, getting an honorary doctorate with Erdős; his presence would give Erdős a Bacon number of 3. Since Frost/Nixon was released in late 2008, Erdős has a Bacon number of 3 through official credits.

Since his death in 1996, many scientific meetings have been dedicated to the memory of Paul ErdAs. From July 4 to 11, 1999, the conference "Paul ErdAs and his Mathematics" was held in Budapest, with the ambitious goal of showing the whole range of ErdAs' work - a difficult task in view of ErdAs' versatility and his broad scope of interest in mathematics. According to this goal, the topics of lectures, given by the leading specialists of the subjects, included number theory, combinatorics, analysis, set theory, probability, geometry and areas connecting them, like ergodic theory. The conference has contributed to changing the common view that ErdAs worked only in combinatorics and combinatorial number theory. In the present two volumes, the editors have collected, besides some personal reminiscences by Paul's old friends, mainly survey articles on his work, and on areas he initiated or worked in.

本书传主匈牙利数学家埃尔德什是当代罕见的数学奇才。他在60多年的数学生涯中，与合作者们共同发表了1475篇高水平的学术论文。
本书以情趣盎然的笔调，穿插数学史上的种种趣闻轶事，刻画出一幅栩栩如生的埃尔德什“肖像画”，同时也向读者展现了一代又一代数学家不屈不挠地迎战诸如“费马大定理”、“四色问题”这样的难题，直至取得辉煌胜利的动人故事。

Based on a National Magazine Award-winning article, this masterful biography of Hungarian-born Paul Erdos is both a vivid portrait of an eccentric genius and a layman's guide to some of this century's most startling mathematical discoveries.