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Yes, 1 and 5, because 5 is a Prime number. A prime number is a number that only has two factors, one and itself. 2 is the only even prime number. 1 is not a prime number or a composite number.
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What is the largest 3-digit number that only has 2 and 5 as prime factors?
The only number that ONLY has two and five as factors is 10, which has two digits, so there are no numbers that are three digits long and ONLY have two and five for factors. However, if you are asking what the largest three digit number that has two and five for factors, it would be the largest three digit number with ten as a factor, as ten the the LCM of two and five, and that would be 390.
Is five a composite number?
No, five is a prime number because there are only two whole numbers that when multiplied, equals five. (Those numbers are five and one.) In order for a number to be composite, it has to have factors other than itself and one.
A number with only two factors 1 and itself?
A number with only two factors, 1 and itself, is a prime number.
A composite is a number that has only two factors?
No, a composite is a number that has more than two factors. A prime number has two factors.
Which numbers have two three and five as their common factors?
30 and 60
