general_fact: 155 is the maximum possible score in a single break in snooker, with a free ball at the start of the break (147 is the highest possible without a free ball).
math_fact: 155 is the sum of the primes between its smallest and largest prime factor.
trivia: 155 is the maximum possible score in a single break in snooker, with a free ball at the start of the break (147 is the highest possible without a free ball).
historical_date: June 3rd is the day in 1889 that the transcontinental Canadian Pacific Railway is completed.