It is: 22*52*19 = 1900
It is: 22*52*19 = 1900
1,900 = 22 x 52 x 191
1900 = 22 x 52 x 191
As a product of its prime factors: 2*2*5*5*19 = 1900 or as 22*52*19 = 1900
2 x 2 x 5 x 5 x 19 = 1900
2 x 2 x 5 x 5 x 19 = 1900
22 x 52 x 19 = 1900
Why don't you start looking for obvious factors. For every 0 in a number, you have a factor of 10 - which has the prime factors 2 and 5.
The US does not have a Prime Minister, so there was no US Prime Minister in 1900.
19
England had a total of 33 prime ministers between the years 1800 and 1900. The prime minister in the year 1800 was Henry Addington and in the year 1900 was Robert Gascoyne-Cecil.