 Kummer used available numerical data for "p" up to 500 (this is described in the 1892 book "Theory of Numbers" by George B. Mathews).There was, however, a 'law of small numbers' operating, meaning that Kummer's original conjecture, of a lack of uniform distribution, suffered from a small-number bias.In 1952 John von Neumann and Herman Goldstine extended Kummer's computations, on ENIAC.