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There are contradictory documents about the size and the significand (mantissa) size of the floating-point format of Zuse's Z3. According to Pr Horst Zuse, this is 22 bits, with a 15-bit significand (implicit bit + 14 represented bits). There has been a recent anonymous change of the article, based on unpublished Raúl Rojas's work, but I wonder whether this is reliable. Raúl Rojas was already wrong in the Bulletin of the Computer Conservation Society Number 37, 2006 about single precision (he said 22 bits for the mantissa). Vincent Lefèvre (talk) 14:44, 21 September 2013 (UTC)
