73 (number)


Cardinal	73 seventy-three
Ordinal	73rd seventy-third
Factorization	'' Prime ''
Roman Numeral	LXXIII
Binary	1001001
Hexadecimal	49

IN MATHEMATICS

''Seventy-three'' is the 21st Prime Number . The previous is Seventy-one , with which it comprises a Twin Prime . It is also a Permutable Prime with Thirty-seven . 73 is a Star Number .

Every positive integer is the sum of at most 73 sixth powers (see Waring's Problem ).

In base 5, the smallest prime with a composite sum of digits is 73.

IN SCIENCE

The Atomic Number of Tantalium

In Astronomy ,

: Messier Object M73 , a Magnitude 9.0 apparent Open Cluster in the Constellation Aquarius

: The , a Barred Spiral Galaxy in the constellation Cetus

:The series which began on 717 BC July 16 and ended on 582 September 3 . The duration of Saros series 73 was 1298.1 years, and it contained 73 solar eclipses.

IN OTHER FIELDS

Seventy-three is also:

The total number of books in the Holy Bible in the Catholic version if the ''Book of Lamentations'' is counted as a book separate from the ''Book of Jeremiah''.

The designation of USA Interstate 73 , a freeway in North Carolina .

The registry of the U.S. Navy's nuclear aircraft carrier USS George Washington (CVN-73) , named after U.S. President George Washington .

The best-known car number of retired NASCAR driver Phil Barkdoll .

In Baseball , the single-season Home Run record set by Barry Bonds in 2001.

The year AD 73 , 73 BC , or 1973 .

Ham Radio operators often use the number 73 as a way of saying "regards" (typically when ending a conversation). {Link without Title}

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73 (number)