From Wikipedia, the free encyclopedia
Natural number
97 (ninety-seven ) is the
natural number following
96 and preceding
98 . It is a
prime number and the only prime in the nineties.
In mathematics
97 is:
the 25th
prime number (the largest two-digit prime number in
base 10 ), following
89 and preceding
101 .
a
Proth prime and a
Pierpont prime as it is 3 × 25 + 1.
[1]
the eleventh member of the
Mian–Chowla sequence .
[2]
a
self number in base 10, since there is no
integer that added to its own digits, adds up to 97.
[3]
the smallest odd prime that is not a
cluster prime .
[4]
the highest two-digit number where the sum of its digits is a square.
the number of primes <= 29 .
[5]
The numbers 97, 907, 9007, 90007 and 900007 are all primes, and they are all
happy primes . However, 9000007 (read as nine million seven ) is
composite and has the factorisation
277 × 32491.
an
emirp
an isolated prime, since 95 and 99 aren't prime.
In science
Ninety-seven is:
In astronomy
In other fields
Ninety-seven is:
In music
A song "
Baby Boy / Saturday Night '97 " by
Whigfield
The number of the
Southern Railway train in the
Wreck of the Old 97 , a ballad recorded by numerous artists, including
Flatt and Scruggs ,
Woody Guthrie ,
Johnny Cash ,
Nine Pound Hammer , and
Hank Snow .
The
Old 97's are an
alt-country band, which took their name from the song "The Wreck of the Old '97".
A song by
Alkaline Trio off their self-titled album
The
Marching 97 ,
marching band of
Lehigh University .
District 97 , a
progressive rock band from the
Chicago area (named after the elementary school District 97 in
Oak Park, Illinois ).
See also
References
100,000
1,000,000
10,000,000
100,000,000
1,000,000,000