0
Still curious? Ask our experts.
Chat with our AI personalities
Ezra
Professor
DevinAdd your answer:
Earn +20 pts
What is the least whole number that has exactly five factors including one?
16
What is the least one digit composite number?
4 is the least one digit composite number
What number is the least 2-digit number?
10 is the smallest 2 digit number.
What is the least positive integer that has exactly 13 factors?
4096 is the smallest number with exactly 13 factors. (Including 1 and itself as factors).192 is the smallest number with exactly 13 properfactors, (excluding the number itself).120 is the smallest number with at least 13 factors (it has 16 factors)To find the smallest number with exactly N factors (for example, N=12):Factor N into primes, (for example, 12= 2*2*3Subtract 1 from each of the prime factors (for example, 1,1,2)Sort them by largest first (for example, 2,1,1)Raise successive prime numbers to these powers (for example, 2^2,3^1,5^1)Multiply these together (for example: 4*3*5 = 60; 60 is the smallest number with exactly 12 factors).
Why is 12543672 not a prime number?
A prime number must have exactly two factors. 12543672 ends in a 2, therefore it can be halved. This means that the factors are at least 1, 2, and 12543672, so it is not a prime number.
