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What are the smallest four numbers that have exactly three factors?
4, 9 and 25.
What are the smallest 3 numbers which have exactly 2 factors?
2 4 6
What is the smallest number with 11 factors?
1024 has exactly eleven. 60 has twelve, so it has eleven as well.
What number has exactly 14 factors?
The smallest is 192 but there are infinitely many such numbers. For example, take any prime number to the 13th power and the result will have exactly fourteen factors. The smallest is 192.
What is the sum of the two smallest whole numbers that each has exactly three distinct positive factors?
4 and 9
What do say for numbers which have exactly 3 factors?
Numbers with exactly three factors are squares of prime numbers.
Numbers with exactly 3 factors?
Squares of prime numbers have exactly three factors.
What is the smallest number which is exactly divisible by the numbers 8 9 and 10?
The smallest number which is exactly divisible by the numbers 8 9 and 10 is 360.
What numbers have exactly 3 factors?
All numbers that are the square of primes have exactly 3 factors.
Which of the tower numbers have exactly tw factors?
All numbers that have exactly two factors are prime numbers whereas composite numbers have more than two factors.
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).
What is the smallest number which is exactly divisible by all the numbers from 1-11?
12
