210
8 has three primes (2x2x2) in its factorization, and 30 is the smallest number having three different primes (2x3x5) in its factorization.
Every member of that infinite list is different.
No.
Yes.
Two.
The number 1 itself has a prime factorization of just the number 1. All other numbers have a prime factorization consisting of at least two prime numbers.
30 and 42
2 x 3 x 5 x 7 x 11 x 13 x 17 = 510,510
1023
The Least Common Multiple (LCM) is the smallest number that two or more numbers will divide into evenly.
It is 27,000.
30