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.
4
20th
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.
1. 1991 is the only number I think.
13 prime number years 1901, 1907, 1913, 1931, 1933, 1949, 1951, 1973, 1979, 1987, 1993, 1997 and 1999.
kyle leroy
210 is the 20th triangular number.
The 20th Fibonacci number in the sequence is 6,765.
The twentieth prime minister was the Right Honourable Jean Chrétien.
Probably 1100-1199 would be referred to as the 12th century. In our time, the 1900s were called the 20th Century.
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
Churchill. No, it was Andrew Bonar Law, the shortest serving Prime Minister of the 20th century.