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Encyclopedia > 65 (number)

65 (sixty-five) is the natural number following 64 and preceding 66. In mathematics, a natural number can mean either an element of the set {1, 2, 3, ...} (i. ... 64 (sixty-four) is the natural number following 63 and preceding 65. ... 66 is the natural number following 65 and preceding 67. ...

 ← 60 61 62 63 64 65 66 67 68 69 → 59 (fifty-nine) is the natural number following 58 and preceding 60. ... 60 (sixty) is the natural number following 59 and preceding 61. ... 61 (sixty-one) is the natural number following 60 and preceding 62. ... 62 (sixty-two) is a natural number following 61 and preceding 63. ... Sixty-three is a natural number following 62 and preceding 64. ... 64 (sixty-four) is the natural number following 63 and preceding 65. ... 66 is the natural number following 65 and preceding 67. ... 67 (sixty-seven) is the natural number following 66 and preceding 68. ... 68 (sixty-eight) is the natural number following 67 and preceding 69 // Sixty-eight is a nontotient. ... 69 (sixty-nine) is the natural number following 68 and preceding 70. ... Look up seventy in Wiktionary, the free dictionary. ... List of numbers — Integers This is a list of articles about numbers (not about numerals). ... The integers are commonly denoted by the above symbol. ... 0 10 20 30 40 50 60 70 80 90 → 0 (zero) is both a number and a numerical digit used to represent that number in numerals. ... 10 (ten) is an even natural number following 9 and preceding 11. ... 20 (twenty) is the natural number following 19 and preceding 21. ... 30 (thirty) is the natural number following 29 and preceding 31. ... 40 (forty) is the natural number following 39 and preceding 41. ... 50 (fifty) is the number following 49 and preceding 51. ... 60 (sixty) is the natural number following 59 and preceding 61. ... Look up seventy in Wiktionary, the free dictionary. ... 80 (eighty) is the natural number following 79 and preceding 81. ... 90 (ninety) is the natural number preceded by 89 and followed by 91. ... 100 (one hundred) (the Roman numeral is C for centum) is the natural number following 99 and preceding 101. ... Cardinal 65 sixty-five Ordinal 65th sixty-fifth Factorization $5 cdot 13$ Divisors 1, 5, 13, 65 Roman numeral LXV Binary 1000001 Hexadecimal 41

## Contents

Aleph-0, the smallest infinite cardinal In mathematics, cardinal numbers, or cardinals for short, are a generalized kind of number used to denote the size of a set. ... Commonly, ordinal numbers, or ordinals for short, are numbers used to denote the position in an ordered sequence: first, second, third, fourth, etc. ... In mathematics, factorization or factoring is the decomposition of an object (for example, a number, a polynomial, or a matrix) into a product of other objects, or factors, which when multiplied together give the original. ... In mathematics, a divisor of an integer n, also called a factor of n, is an integer which evenly divides n without leaving a remainder. ... The system of Roman numerals is a numeral system originating in ancient Rome, and was adapted from Etruscan numerals. ... The binary numeral system, or base-2 number system, is a numeral system that represents numeric values using two symbols, usually 0 and 1. ... In mathematics and computer science, hexadecimal, base-16, or simply hex, is a numeral system with a radix, or base, of 16, usually written using the symbols 0â€“9 and Aâ€“F, or aâ€“f. ...

Sixty-five is an octagonal number. It is also a Cullen number. Given 65, the Mertens function returns 0. An octagonal number is a figurate number that represents an octagon. ... In mathematics, a Cullen number is a natural number of the form n · 2n + 1 (written Cn). ... In number theory, the Mertens function is where &#956;(k) is the Möbius function. ... 0 (zero) is both a number and a numerical digit used to represent that number in numerals. ...

This number is the magic constant of 5 by 5 normal magic square: The magic constant of a magic square, an n-by-n matrix, is defined such that the sum of any row, column or main diagonal yields the same result, denoted M2(n). ... It has been suggested that Date magic square be merged into this article or section. ...

$begin{bmatrix} 17 & 24 & 1 & 8 & 15 23 & 5 & 7 & 14 & 16 4 & 6 & 13 & 20 & 22 10 & 12 & 19 & 21 & 3 11 & 18 & 25 & 2 & 9 end{bmatrix}.$

This number is also the magic constant of n-Queens Problem for n = 5. The magic constant of a magic square, an n-by-n matrix, is defined such that the sum of any row, column or main diagonal yields the same result, denoted M2(n). ... One possible solution The eight queens puzzle is the problem of putting eight chess queens on an 8Ã—8 chessboard such that none of them is able to capture any other using the standard chess queens moves. ...

65 can be expressed as a sum of two squares in two ways, 65 = 82 + 12 = 72 + 42.

It appears in the Padovan sequence, preceded by the terms 28, 37, 49 (it is the sum of the first two of these). The Padovan sequence is the sequence of integers P(n) defined by the initial values and the recurrence relation The first few values of P(n) are 1, 1, 1, 2, 2, 3, 4, 5, 7, 9, 12, 16, 21, 28, 37, 49, 65, 86, 144, 151, 200. ...

There are only 65 known Euler's idoneal numbers.

## In science

It has been suggested that List of elements by atomic number be merged into this article or section. ... General Name, Symbol, Number terbium, Tb, 65 Chemical series lanthanides Group, Period, Block n/a, 6, f Appearance silvery white Atomic mass 158. ...

### Astronomy

• The Saros number of the solar eclipse series which began on -749 April 24 and ended on 513 May 20. The duration of Saros series 65 was 1262.1 years, and it contained 71 solar eclipses.
• The Saros number of the lunar eclipse series which began on -736 August 11 and ended on 797 February 16. The duration of Saros series 65 was 1532.5 years, and it contained 86 lunar eclipses.

The Messier objects are a set of astronomical objects catalogued by Charles Messier in his catalogue of Nebulae and Star Clusters first published in 1774. ... M65 refers to: Messier 65 a Messier object and a spiral galaxy in the Leo constellation. ... The apparent magnitude (m) of a star, planet or other heavenly body is a measure of its apparent brightness; that is, the amount of light received from the object. ... NGC 4414, a typical spiral galaxy in the constellation Coma Berenices, is about 17,000 parsecs in diameter and approximately 20 million parsecs distant. ... This article or section does not adequately cite its references or sources. ... Leo (IPA: , Latin: , symbol , ) is a constellation of the zodiac. ... The New General Catalogue (NGC) is the most well-known catalogue of deep sky objects in amateur astronomy. ... An example of a spiral galaxy, the Pinwheel Galaxy (also known as Messier 101 or NGC 5457) A spiral galaxy is a type of galaxy in the Hubble sequence which is characterized by the following physical properties: A considerable total angular momentum Composed of a central bulge surrounded by a... Cetus (a name from Greek mythology, referring to a Whale or Sea monster, see Ceto) is a constellation of the southern sky, in the region known as the Water, near other watery constellations like Aquarius, Pisces, and Eridanus. ... A Saros cycle is a period of 6585 + 1/3 days (approximately 18 years 10 days and 8 hours) which can be used to predict eclipses of the sun and the moon. ... Photo taken during the 1999 eclipse. ... April 24 is the 114th day of the year in the Gregorian calendar (115th in leap years). ... Events Births Deaths Categories: 513 ... May 20 is the 140th day of the year in the Gregorian calendar (141st in leap years). ... Time lapse movie of the 3 March 2007 lunar eclipse A lunar eclipse occurs whenever the Moon passes through some portion of the Earths shadow. ... August 11 is the 223rd day of the year (224th in leap years) in the Gregorian calendar. ... Events July 17 - Irene orders her son, the Byzantine emperor Constantine VI captured and deposed August 15 - Irenes orders are accomplished; her son is blinded, and herself declared emperor the next day. ... February 16 is the 47th day of the year in the Gregorian calendar. ...

Sixty-five is:

## In sports

The National Collegiate Athletic Association (NCAA, often said NC-Double-A) is a voluntary association of about 1200 institutions, conferences, organizations and individuals that organizes the athletics programs of many colleges and universities in the United States. ... NFL logo For other uses of the abbreviation NFL, see NFL (disambiguation). ... City New Orleans, Louisiana Team colors Old Gold, Black, and White Head Coach Sean Payton Owner Tom Benson General manager Mickey Loomis Mascot Gumbo League/Conference affiliations National Football League (1967â€“present) Eastern Conference (1967-1969) Capitol Division (1967; 1969) Century Division (1968) National Football Conference (1970-present) NFC West... Elvin Lamont Bethea (born March 1, 1946, Trenton, New Jersey) is a former American football defensive end who played his entire career with the Houston Oilers. ... Major League Baseball (MLB) is the highest level of play in professional baseball in North America. ... Major league affiliations American League (1961â€“present) West Division (1972â€“present) Current uniform Retired Numbers 26,34,42 Name Texas Rangers (1972â€“present) Washington Senators (1961-1971) Ballpark Ameriquest Field in Arlington (1994â€“present) a. ...

## Historical years

65 A.D., 65 B.C., 1965, 2065, etc. Headline text Events By place Roman Empire Gaius Calpurnius Piso conspires against Roman emperor Nero. ... Centuries: 2nd century BC - 1st century BC - 1st century Decades: 110s BC 100s BC 90s BC 80s BC 70s BC - 60s BC - 50s BC 40s BC 30s BC 20s BC 10s BC Years: 70 BC 69 BC 68 BC 67 BC 66 BC 65 BC 64 BC 63 BC 62... 1965 (MCMLXV) was a common year starting on Friday (the link is to a full 1965 calendar). ... (Redirected from 2065) Millennia: 2nd millennium - 3rd millennium - 4th millennium Centuries: 20th century - 21st century - 22nd century Decades: 2010s 2020s 2030s 2040s 2050s - 2060s - 2070s 2080s 2090s Years: 2060 2061 2062 2063 2064 2065 2066 2067 2068 2069 The Decade as a Whole This decade is expected to be called...

Results from FactBites:

 1900-1930: Number of People Age 65 Plus Living in Institutions | ElderWeb (468 words) Summary: The table shows the number of people age 65+ who may have been living in institutions from 1900 to 1930, and their percentage of the total age 65+ population at the time. It determined that 50% or more of the age 65+ population was dependent on relatives or friends (either living with them or getting financial assistance from them to live somewhere else), 2.5% were living in poorhouses or mental hospitals, and 1-2% were living in private homes for the aged. The data on the age 65+ population in mental facilities and poorhouses in 1904 and 1910 comes from Colleen L. Johnson and Leslie A. Grant.
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