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Earn +20 ptsQ: What numbers have exactly 3 factors?
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What do say for numbers which have exactly 3 factors?
Numbers with exactly three factors are squares of prime numbers.
Numbers with 3 factors?
The squares of all prime numbers above 2 have exactly 3 factors.
What are the three numbers below 30 that have exactly 3 factors?
Numbers with three factors are squares of primes. So: 4, 9, 25
How many natural numbers less than 1000 will have exactly 3 factors?
11
A number that has exactly 3 factors?
The way to be sure you have one of these is to take any three distinct prime numbers and multiply them. Those three prime numbers are then the only factors the product can have. An example is the number 30, which has factors of 2, 3 and 5.
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