The number of people notified doubled and tripled. For each additional minute, the number of newly notified players is exactly the total number of all notified players and teachers. If teachers are included, the total number of people who know this notice in the first minute is 2, the total number of people who know this notice in the second minute is 4, the total number of people who receive this notice in the third minute is 8, and the total number of people who receive this notice in the fourth minute is 16. . . etc

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(6) A steel pipe band has 40 people. There is an urgent performance task now, and the conductor should call each player as soon as possible.

1. If 1 person is notified every minute, how long will it take to notify everyone at least?

2. According to the above method, how many people can be notified at most in 5 minutes?

3. If two people are notified every minute, how long will it take to notify everyone at least?