97 (NUMBER)

'97' ('ninety-seven') is the natural number following 96 and preceding 98.

Cardinal	97 ninety-seven
Ordinal	97th ninety-seventh
Factorization	$prime$
Divisors	1, 97
Roman numeral	XCVII
Binary	1100001
Hexadecimal	61

Contents

In mathematics

In astronomy

In other fields

In mathematics

'97' is the 25th prime number (the largest two-digit prime number in base 10), following 89 and preceding 101. 97 is a Proth prime as it is 3 × 2⁵ + 1.
The numbers 97, 907, 9007, 90007 and 900007 are happy primes. However, 9000007 (read as ''nine million and seven'') is composite and has the factorisation 277 × 32491.
97 is the tenth member of the Mian-Chowla sequence.
Since there is no integer that added to its own digits adds up to 97, 97 is a self number in base 10.

In astronomy

★ Messier object M97, a magnitude 12.0 planetary nebula in the constellation Ursa Major, also known as the Owl Nebula

★ The New General Catalogue object NGC 97, an elliptical galaxy in the constellation Andromeda

★ The Saros number of

★
★ the solar eclipse series which began on 123 June 11 and ended on 1385 July 8. The duration of Saros series 97 was 1262.1 years, and it contained 71 solar eclipses.

★
★ the lunar eclipse series which began on 425 march 20 and ended on 1723 May 20. The duration of Saros series 97 was 1298.1 years, and it contained 73 lunar eclipses.

In other fields

'Ninety-seven' is:

★ The atomic number of berkelium, an actinide.

★ The number of the Southern Railway train in the Wreck of the Old 97.

★ The number of Kurt Busch's NASCAR Ford when he won the 2004 NEXTEL Cup Series championship.

★ The designation of Interstate 97, a freeway in Maryland, the shortest Interstate freeway in the continental United States.

★ OC Transpo Route 97, A Transitway bus route in Ottawa, Ontario

★ The year AD '97', 97 BC, or 1997.

★ A song by Alkaline Trio off their self titled album.