# Fame.am profile — machine-readable export
# Canonical URL: https://fame.am/person/derrick-henry-lehmer
# Generated: 2026-08-14T21:10:03.686Z

schema: https://schema.org/Person
url: "https://fame.am/person/derrick-henry-lehmer"
name: "Derrick Henry Lehmer"
slug: "derrick-henry-lehmer"
description: "Derrick Henry \"Dick\" Lehmer, almost always cited as D. H. Lehmer, was an American mathematician significant to the development of computational number theory. Lehmer refined Édouard Lucas' work in the 1930s and devised the Lucas–Lehmer test for Mersenne primes. His peripatetic career as a number theorist, with him and his wife taking numerous types of work in the United States and abroad to support themselves during the Great Depression, fortuitously brought him into the center of research into early electronic computing."
tagline: "American mathematician (1905-1991)"
image: "https://commons.wikimedia.org/wiki/Special:FilePath/Derrick_Henry_Lehmer_1984_(rescanned%2C_cropped).jpg?width=1200"
gender: "male"
country:
  name: "United States"
  isoCode: "US"
category:
  name: "Academics"
  slug: "academics"
profileType:
  name: "Academic"
  slug: "academic"
  entityType: "https://www.wikidata.org/entity/Q39631"
birthDate: "1905-02-23"
deathDate: "1991-05-22"
livingStatus: "DECEASED"
scores:
  popularity:           45.69
  momentum:             0
  historical:           13.75162133333333
  currentAttention:     0
  sourceConfidence:     60
  profileCompleteness:  70
  trendDirection:       "FALLING"
ranks:
  global:   null
  country:  null
  category: null
sources:
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    title: "德里克·亨利·莱默"
    type:  "WIKIPEDIA"
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    title: "ديريك هنري ليهمر"
    type:  "WIKIPEDIA"
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    title: "ديريك هنرى ليهمر"
    type:  "WIKIPEDIA"
  - url: "https://ca.wikipedia.org/wiki/Derrick_Henry_Lehmer"
    title: "Derrick Henry Lehmer"
    type:  "WIKIPEDIA"
  - url: "https://de.wikipedia.org/wiki/Derrick_Henry_Lehmer"
    title: "Derrick Henry Lehmer"
    type:  "WIKIPEDIA"
  - url: "https://en.wikipedia.org/wiki/D._H._Lehmer"
    title: "D. H. Lehmer"
    type:  "WIKIPEDIA"
  - url: "https://es.wikipedia.org/wiki/Derrick_Henry_Lehmer"
    title: "Derrick Henry Lehmer"
    type:  "WIKIPEDIA"
  - url: "https://fr.wikipedia.org/wiki/Derrick_Lehmer"
    title: "Derrick Lehmer"
    type:  "WIKIPEDIA"
  - url: "https://gl.wikipedia.org/wiki/D._H._Lehmer"
    title: "D. H. Lehmer"
    type:  "WIKIPEDIA"
  - url: "https://he.wikipedia.org/wiki/%D7%93%D7%A8%D7%99%D7%A7_%D7%94%D7%A0%D7%A8%D7%99_%D7%9C%D7%94%D7%9E%D7%A8"
    title: "דריק הנרי להמר"
    type:  "WIKIPEDIA"
  - url: "https://ht.wikipedia.org/wiki/Derrick_Henry_Lehmer"
    title: "Derrick Henry Lehmer"
    type:  "WIKIPEDIA"
  - url: "https://ko.wikipedia.org/wiki/%EB%8D%B0%EB%A6%AD_%ED%97%A8%EB%A6%AC_%EB%A0%88%EB%A8%B8"
    title: "데릭 헨리 레머"
    type:  "WIKIPEDIA"
  - url: "https://nl.wikipedia.org/wiki/Derrick_Henry_Lehmer"
    title: "Derrick Henry Lehmer"
    type:  "WIKIPEDIA"
  - url: "https://pl.wikipedia.org/wiki/Derrick_Henry_Lehmer"
    title: "Derrick Henry Lehmer"
    type:  "WIKIPEDIA"
  - url: "https://pt.wikipedia.org/wiki/Derrick_Henry_Lehmer"
    title: "Derrick Henry Lehmer"
    type:  "WIKIPEDIA"
  - url: "https://ru.wikipedia.org/wiki/%D0%9B%D0%B5%D0%BC%D0%B5%D1%80%2C_%D0%94%D0%B5%D1%80%D1%80%D0%B8%D0%BA_%D0%93%D0%B5%D0%BD%D1%80%D0%B8"
    title: "Лемер, Деррик Генри"
    type:  "WIKIPEDIA"
  - url: "https://www.wikidata.org/wiki/Q1200338"
    title: "Wikidata"
    type:  "WIKIDATA"

# bio (long form, separated for readability)
bio: |
  Imported from discovery source: wikidata-dump