Twenty-nine
Twenty-nine (29, XXIX) is the
natural number following
twenty-eight and preceding
thirty. It is the tenth
prime number, and also a
primorial prime, the next prime number as well as primoral prime being
thirty-one, with which it comprises a
twin prime. Twenty-nine is also the sum of three squares, 2
2 + 3
2 + 4
2. It is a
Lucas number and a Pell number.
The lunar month is very close to twenty-nine days.
Twenty-nine is also
See also: twenty-seven,
twenty-eight,
thirty,
thirty-one,
integer,
list of numbers.
This article is about the number. For the year AD 29, see 29.