# Fame.am profile — machine-readable export
# Canonical URL: https://fame.am/person/ivan-mikheevich-pervushin
# Generated: 2026-08-14T17:40:15.030Z

schema: https://schema.org/Person
url: "https://fame.am/person/ivan-mikheevich-pervushin"
name: "Ivan Mikheevich Pervushin"
slug: "ivan-mikheevich-pervushin"
description: "Ivan Mikheevich Pervushin was a Russian clergyman and mathematician of the second half of the 19th century, known for his achievements in number theory. He discovered the ninth perfect number and its odd prime factor, the ninth Mersenne prime. Also, he proved that two Fermat numbers, the 12th and 23rd, were composite."
tagline: "Russian mathematician"
image: "https://commons.wikimedia.org/wiki/Special:FilePath/%D0%9F%D0%B5%D1%80%D0%B2%D1%83%D1%88%D0%B8%D0%BD_%D0%98%D0%B2%D0%B0%D0%BD_%D0%9C%D0%B8%D1%85%D0%B5%D0%B5%D0%B2%D0%B8%D1%87.jpg?width=1200"
gender: "male"
category:
  name: "Academics"
  slug: "academics"
profileType:
  name: "Academic"
  slug: "academic"
  entityType: "https://www.wikidata.org/entity/Q39631"
birthDate: "1827-01-15"
deathDate: "1900-06-17"
livingStatus: "DECEASED"
scores:
  popularity:           42.12
  momentum:             21.47058823529412
  historical:           7.007056
  currentAttention:     0
  sourceConfidence:     45
  profileCompleteness:  60
  trendDirection:       "BREAKOUT"
ranks:
  global:   null
  country:  null
  category: null
sources:
  - url: "https://sl.wikipedia.org/wiki/Ivan_Mihejevi%C4%8D_Pervu%C5%A1in"
    title: "Ivan Mihejevič Pervušin"
    type:  "WIKIPEDIA"
  - url: "https://ar.wikipedia.org/wiki/%D8%A5%D9%8A%D9%81%D8%A7%D9%86_%D9%85%D9%8A%D8%AE%D9%8A%D9%81%D9%8A%D8%AA%D8%B4_%D8%A8%D9%8A%D8%B1%D9%81%D9%88%D8%B4%D9%8A%D9%86"
    title: "إيفان ميخيفيتش بيرفوشين"
    type:  "WIKIPEDIA"
  - url: "https://cs.wikipedia.org/wiki/Ivan_Michejevi%C4%8D_Pervu%C5%A1in"
    title: "Ivan Michejevič Pervušin"
    type:  "WIKIPEDIA"
  - url: "https://en.wikipedia.org/wiki/Ivan_Pervushin"
    title: "Ivan Pervushin"
    type:  "WIKIPEDIA"
  - url: "https://fr.wikipedia.org/wiki/Ivan_Mikhe%C3%AFevitch_Pervouchine"
    title: "Ivan Mikheïevitch Pervouchine"
    type:  "WIKIPEDIA"
  - url: "https://ht.wikipedia.org/wiki/Ivan_Mikheevich_Pervushin"
    title: "Ivan Mikheevich Pervushin"
    type:  "WIKIPEDIA"
  - url: "https://pt.wikipedia.org/wiki/Ivan_Pervushin"
    title: "Ivan Pervushin"
    type:  "WIKIPEDIA"
  - url: "https://ru.wikipedia.org/wiki/%D0%9F%D0%B5%D1%80%D0%B2%D1%83%D1%88%D0%B8%D0%BD%2C_%D0%98%D0%B2%D0%B0%D0%BD_%D0%9C%D0%B8%D1%85%D0%B5%D0%B5%D0%B2%D0%B8%D1%87"
    title: "Первушин, Иван Михеевич"
    type:  "WIKIPEDIA"
  - url: "https://www.wikidata.org/wiki/Q374046"
    title: "Wikidata"
    type:  "WIKIDATA"

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