The 20th prime is 71.
Last prime of the 20th Century was 1999. Last prime of the 21st Century will be 2099.
The 20th Fibonacci number in the sequence is 6,765.
20th
4
The 20th triangular number is 20*21/2 = 210
minister for social society
It is neither. Prime numbers have two factors, which are 1 and itself. Composite numbers have at least 3 factors, which are 1, itself, and at least one other factor. One does not fit either definition, since the only factor of 1 is 1.(It used to be considered a prime number, but they changed the rules sometime in the mid-20th century.)
Last prime of the 20th Century was 1999. Last prime of the 21st Century will be 2099.
There are 25 prime number years in the 20th century. Prime number years are those that have only two factors: 1 and the number itself. The 20th century spans from 1901 to 2000, and the prime number years within this range are: 1901, 1907, 1911, 1913, 1917, 1919, 1931, 1933, 1939, 1949, 1951, 1957, 1959, 1961, 1963, 1973, 1979, 1987, 1993, 1997.
1. 1991 is the only number I think.
kyle leroy
210 is the 20th triangular number.
The 20th Fibonacci number in the sequence is 6,765.
Probably 1100-1199 would be referred to as the 12th century. In our time, the 1900s were called the 20th Century.
The twentieth prime minister was the Right Honourable Jean Chrétien.
Harry Conroy has written: 'Callaghan (British Prime Ministers of the 20th Century) (British Prime Ministers of the 20th Century)' 'Off the record' -- subject(s): Biography, Journalists
no- he was number 15. Garfield was the 20th.