• Thumbnail for Pietro Cataldi
    Pietro Antonio Cataldi (15 April 1548, Bologna – 11 February 1626, Bologna) was an Italian mathematician. A citizen of Bologna, he taught mathematics and...
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  • composer Pietro Cataldi (1548–1626), Italian mathematician Renato Cataldi (1909–1981), Brazilian painter This page lists people with the surname Cataldi. If...
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  • Thumbnail for Largest known prime number
    Discoverer M13 8,191 4 1456 Anonymous M17 131,071 6 1588 Pietro Cataldi M19 524,287 6 1588 Pietro Cataldi 2 32 + 1 641 {\displaystyle {\tfrac {2^{32}+1}{641}}}...
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  • Thumbnail for 2,147,483,647
    Bernoulli written in 1772. Euler used trial division, improving on Pietro Cataldi's method, so that at most 372 divisions were needed. It thus improved...
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  • and politician Pietro Carnesecchi (1508–1567), Italian humanist Pietro Cascella (1921–2008), Italian painter and sculptor Pietro Cataldi (1548–1626), Italian...
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  • Renaissance, including by Pietro Cataldi. Ismāʽīl ibn-Fullūs, Iʽdād al-asrār fī asrār al-iʽdād Regiomontanus Johannes Scheubel Pietro Cataldi Brentjes, Sonja (1988)...
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  • discovered anonymously before 1461; the next two (M17 and M19) were found by Pietro Cataldi in 1588. After nearly two centuries, M31 was verified to be prime by...
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  • Thumbnail for List of Mersenne primes and perfect numbers
    Retrieved 13 October 2021. Cataldi, Pietro Antonio (1603). Trattato de' numeri perfetti di Pietro Antonio Cataldo [Pietro Antonio Cataldi's treatise on perfect...
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    writer, mystic and artist Pier Ferdinando Casini (born 1955), politician Pietro Cataldi (1548–1626), mathematician Chronics, rock band Pierluigi Collina (born...
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  • Thumbnail for Euclid's Elements
    Pieterszoon Dou (Dutch) 1607, Matteo Ricci, Xu Guangqi (Chinese) 1613, Pietro Cataldi (Italian) 1615, Denis Henrion (French) 1617, Frans van Schooten (Dutch)...
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  • Thumbnail for 1548
    1610) March 18 – Cornelis Ketel, Dutch painter (d. 1616) April 15 – Pietro Cataldi, Italian mathematician (d. 1626) May – Carel van Mander, Dutch painter...
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  • contrast to his own x . {\displaystyle x.} A crossed numeral 1 was used by Pietro Cataldi for the first power of the unknown. The link between this convention...
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  • and poet (died 1690) approx. date – Pietro Mengoli, Italian mathematician (died 1686) February 11 – Pietro Cataldi, Italian mathematician (born 1548) April...
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  • 24 years later, in 1613, Pietro Cataldi introduced the first formal notation for the generalized continued fraction. Cataldi represented a continued fraction...
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  • constellations. Acadia, the French colony in North America, is founded. Pietro Cataldi finds the sixth and seventh perfect numbers. Girolamo Fabrici studies...
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  • Thumbnail for Perfect number
    1461 by an unknown mathematician. In 1588, the Italian mathematician Pietro Cataldi identified the sixth (8,589,869,056) and the seventh (137,438,691,328)...
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  • fractions 1613 Pietro Cataldi, Trattato del modo brevissimo di trovar la radice quadra delli numeri – first notation for continued fractions Cataldi represented...
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  • architect (d. 1519) 1469 – Guru Nanak, the first Sikh guru (d. 1539) 1552 – Pietro Cataldi, Italian mathematician and astronomer (d. 1626) 1563 – Guru Arjan Dev...
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  • Thumbnail for Rafael Bombelli
    continued fraction, and below is the algorithm of a later version given by Pietro Cataldi (1613). The method for finding n {\displaystyle {\sqrt {n}}} begins...
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  • and theologian (b. 1096) 1503 – Elizabeth of York (b. 1466) 1626 – Pietro Cataldi, Italian mathematician and astronomer (b. 1548) 1650 – René Descartes...
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  • 1610) March 18 – Cornelis Ketel, Dutch painter (d. 1616) April 15 – Pietro Cataldi, Italian mathematician (d. 1626) May – Carel van Mander, Dutch painter...
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  • Thumbnail for 1620s
    1551) February 7 – William V, Duke of Bavaria (b. 1548) February 11 – Pietro Cataldi, Italian mathematician (b. 1552) February 20 – John Dowland, English...
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  • wyth the commune names that Herbaries and Apotecaries use April 15 – Pietro Cataldi, Italian mathematician (died 1626) Giordano Bruno, Italian Dominican...
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  • Thumbnail for Franco Fortini
    Jean-Charles Vegliante, Stefano Dal Bianco, Massimo Raffaeli, Gianni D'Elia, Pietro Cataldi, Andrea Inglese, Davide Dalmas, Thomas Peterson, Giovanni La Guardia...
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    Palazzo Grua, (18th century), now seat of the town administration Palazzo Cataldi, (18th century), now seat of the town library Palazzo Aumale, built in...
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  • Thumbnail for 1626
    1551) February 7 – William V, Duke of Bavaria (b. 1548) February 11 – Pietro Cataldi, Italian mathematician (b. 1552) February 20 – John Dowland, English...
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  • first Chinese edition of Euclid's Elements Giordano Bruno (1548–1600) Pietro Cataldi (1548–1626), mathematician, discovered the sixth and seventh perfect...
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  • OCLC 15800652. Alighieri, Dante; Bosco, Umberto; Reggio, Giovanni; Cataldi, Pietro (1988). Inferno (in Italian). Firenze: Le Monnier. ISBN 978-88-00-41218-6...
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  • of Nicolaus Copernicus (died 1543) is completed by Bernardino Baldi. Pietro Cataldi discovers the sixth and seventh Mersenne primes by this year. Giovanni...
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  • Thumbnail for Saint Clement and Sisinnius inscription
    Letteratura italiana 4, vol. 4. Turin: Einaudi. Lupercini, Romano & Cataldi, Pietro & Marchiani, Lidia & Marchese, Franco. Il nuovo. La scrittura e l'interpretazione...
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