Artifact Details

Title

Photoelectric Number Sieve Machine ("Gear Machine")

Catalog Number

X85.82

Type

Physical object

Description

This gear number sieve was constructed to solve number theory problems such as factoring and determining if a number is prime. The machine also had a photo detector and powerful amplifier which was not included in the gift.

Date

1932

Manufacturer

D. H. Lehmer / Robert Canepa

Place Manufactured

U.S.

Identifying Numbers

Model number Number Sieve
Serial number 1 (of 1)

Dimensions

overall:

Category

Calculator/electromechanical

Credit

Gift of D. H. Lehmer

Lot Number

X85.82