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History of Number Theory

Number Theory

A collection of historical facts and milestones in the development of number theory.

history mathematics integers
25 Questions Medium Ages 12+ Aug 9, 2026

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This study set covers Number Theory through 25 practice questions. A collection of historical facts and milestones in the development of number theory. Every question includes the correct answer so you can learn as you go — pick any format above to get started.

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Browse all 25 questions from the History of Number Theory study set below. Each question shows the correct answer — select a study format above to practice interactively.

1 Which ancient clay tablet, dating to the Old Babylonian period, contains a list of Pythagorean triples?
  • A Plimpton 322
  • B Rhind Papyrus
  • C Moscow Papyrus
  • D Berlin Papyrus
2 Who is credited with providing the first rigorous proof of the Infinitude of Primes in his work 'Elements'?
  • A Archimedes
  • B Euclid
  • C Pythagoras
  • D Diophantus
3 Pierre de Fermat famously claimed to have a proof for which theorem in the margin of his copy of Diophantus's 'Arithmetica'?
  • A Fermat's Little Theorem
  • B Fermat's Polygonal Number Theorem
  • C Fermat's Last Theorem
  • D Fermat's Two-Square Theorem
4 Which mathematician finally proved Fermat's Last Theorem in 1994?
  • A Andrew Wiles
  • B Leonhard Euler
  • C Carl Friedrich Gauss
  • D Kurt Gödel
5 The study of modular arithmetic was formalized in the 1801 book 'Disquisitiones Arithmeticae' by which mathematician?
  • A Bernhard Riemann
  • B Joseph-Louis Lagrange
  • C Carl Friedrich Gauss
  • D Augustin-Louis Cauchy
6 Which 18th-century mathematician discovered the formula relating the sum of the reciprocals of primes to the natural logarithm?
  • A Leonhard Euler
  • B Isaac Newton
  • C Gottfried Leibniz
  • D Brook Taylor
7 The Goldbach Conjecture, proposed in 1742, suggests that every even integer greater than 2 is the sum of two what?
  • A Perfect numbers
  • B Prime numbers
  • C Triangular numbers
  • D Square numbers
8 What is the name of the function, denoted by phi(n), that counts the positive integers up to n that are relatively prime to n?
  • A Euler's totient function
  • B Riemann zeta function
  • C Mobius function
  • D Dirichlet function
9 Which mathematician developed the 'Sieve of Eratosthenes', an ancient algorithm for finding all prime numbers up to any given limit?
  • A Eratosthenes of Cyrene
  • B Hypatia of Alexandria
  • C Pappus of Alexandria
  • D Apollonius of Perga
10 The 'Arithmetica', a major work on number theory that influenced Fermat and others, was written by whom?
  • A Diophantus
  • B Plato
  • C Thales
  • D Hipparchus
11 In 1859, Bernhard Riemann published a paper that introduced which famous function, central to the study of prime number distribution?
  • A Riemann zeta function
  • B Gamma function
  • C Beta function
  • D Elliptic function
12 The 'Prime Number Theorem', describing the asymptotic distribution of prime numbers, was independently proved in 1896 by which two mathematicians?
  • A Hadamard and de la Vallée Poussin
  • B Hardy and Littlewood
  • C Hilbert and Cantor
  • D Cauchy and Abel
13 Which English mathematician is known for his extensive work on the distribution of primes and his collaboration with Ramanujan?
  • A G.H. Hardy
  • B Alan Turing
  • C Charles Babbage
  • D Bertrand Russell
14 Srinivasa Ramanujan, a self-taught mathematical genius, made significant contributions to number theory from which country?
  • A India
  • B Japan
  • C Brazil
  • D South Africa
15 The 'Law of Quadratic Reciprocity' was first conjectured by Euler and Legendre, but the first published proof was provided by whom?
  • A Carl Friedrich Gauss
  • B Pierre de Fermat
  • C Blaise Pascal
  • D Joseph Fourier
16 Which 17th-century French mathematician and monk conducted extensive correspondence on number theory and is the namesake of the Mersenne primes?
  • A Marin Mersenne
  • B René Descartes
  • C Blaise Pascal
  • D Pierre Gassendi
17 Sophie Germain made a major breakthrough toward proving Fermat's Last Theorem by proving the result for a specific class of primes now known as:
  • A Sophie Germain primes
  • B Gaussian primes
  • C Mersenne primes
  • D Fermat primes
18 What is the name of the constant, denoted by gamma, that appears in the context of the harmonic series and Euler-Mascheroni?
  • A Euler-Mascheroni constant
  • B Feigenbaum constant
  • C Khinchin constant
  • D Landau constant
19 The 'ABC conjecture', a major unsolved problem in number theory, deals with the relationship between the radical of the product of three coprime integers, and was proposed in:
  • A 1985
  • B 1750
  • C 1920
  • D 2005
20 Which mathematician introduced the concept of 'Gaussian integers' (numbers of the form a + bi where a and b are integers)?
  • A Carl Friedrich Gauss
  • B Augustin-Louis Cauchy
  • C Niels Henrik Abel
  • D Évariste Galois
21 The 'Four-Square Theorem', stating that every natural number can be represented as the sum of four integer squares, was proved by:
  • A Joseph-Louis Lagrange
  • B Pierre de Fermat
  • C John Wallis
  • D Isaac Barrow
22 What is the name of the 19th-century mathematician who contributed significantly to number theory through his work on the 'Dirichlet series'?
  • A Peter Gustav Lejeune Dirichlet
  • B Carl Jacobi
  • C Karl Weierstrass
  • D Bernhard Riemann
23 A 'Perfect number' is a positive integer that is equal to the sum of its proper divisors. Which is the smallest perfect number?
  • A 6
  • B 8
  • C 10
  • D 12
24 Which mathematician formulated the 'Prime Number Theorem' as a conjecture based on analyzing tables of primes?
  • A Adrien-Marie Legendre
  • B Carl Friedrich Gauss
  • C Leonhard Euler
  • D Joseph-Louis Lagrange
25 The 'Wolfskehl Prize' was established in 1908 to reward the proof of which famous mathematical problem?
  • A Fermat's Last Theorem
  • B Goldbach Conjecture
  • C Twin Prime Conjecture
  • D Riemann Hypothesis
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