29 (number) Article Index for
29
 

Information About

29 (number)






Cardinal 29
twenty-nine
Ordinal 29th
twenty-ninth
Factorization '' Prime ''
Roman Numeral XXIX
Binary 11101
Hexadecimal 1D



IN MATHEMATICS

It is the tenth Prime Number , and also the third Primorial Prime , the next prime number as well as primorial prime being Thirty-one , with which it comprises a Twin Prime . Twenty-nine is also the sixth Sophie Germain Prime . It is also the sum of three squares, 22 + 32 + 42. It is a Lucas Prime , a Pell Prime and a Tetranacci Number . It is an Eisenstein Prime with no imaginary part and real part of the form 3n - 1.

None of the first 29 natural numbers have more than two different prime factors. This is the longest such consecutive sequence.

29 is a Markov Number , appearing in the solutions to x^2 + y^2 + z^2 = 3xyz: {2, 5, 29}, {2, 29, 169}, {5, 29, 433}, {29, 169, 14701}, etc.


IN SCIENCE



Astronomy




  • The series which began on -1881 March 1 and ended on -583 April 19 . The duration of Saros series 29 was 1298.1 years, and it contained 73 solar eclipses.





IN OTHER FIELDS

Twenty-nine is:


EXTERNAL LINK

On the number 29 at Wisdom Portal