OK, each person may post 1 number, the next one from previous post. Also say something about the number, say 10: Ah! 10! The first number with 2 digits. See how quick it'll take to get to 100
73 is actually a prime number, even though it doesn't seem like it.
So for this event, I have created a math problem: Some students are in a room. If they are arranged in rows of 6, there is 1 left over. If arranged in rows of 8, there is 1 left over. If arranged in rows of 4, there is 1 left over.
Seventy-four is the twenty-first distinct semiprime and the eleventh of the form 2Ã-q. The aliquot sum of 74 is 40 within the aliquot sequence (74,40,43,1,0) 74 being the sixth composite number in the 43-aliquot tree.