Study guides

☆☆

Q: Odd number that is less than 160 and has 3 different prime factors?

Write your answer...

Submit

Still have questions?

Related questions

30

30 does.

How about 105 whose prime factors are 3, 5 and 7

15

210 has 4, which is the maximum possible. There are other numbers with 4 different prime factors.

105

One answer is 30. There are others.

How about 30 or 105

1

no, factors of a number would be less than that of the original number. A prime number is a number that has factors of only itself and 1.

105 and the primes are 3, 5, and 7

96 = 2*2*2*2*2*3 has 6 prime factors, but only 2 different ones.The maximum number of different prime factors is 3: for 30, 42, 66, 70 and 78.

No whole number has only three prime factors. At the very least, every number has one as a factor, which is not prime.

30 (2 x 3 x 5) and 42 (2 x 3 x 7) are the only numbers less than 60 having three different prime factors.

The prime numbers less than 13 have the fewest factors. They are:235711

The smallest prime numbers, after 2, are 3 and 5. 3 x 5 = 15.

It is 97 which has only two factors because it is a prime number

210

105=3*5*7it has to be only three factors and they are all prime105

A number is prime if its only two factors are one and itself.

By definition, a prime number has exactly two factors. So, there are no prime numbers with exactly three factors.

105

105

512 = 29 or 768 = 28*3 have 9 prime factors each.

Numbers can be checked to see if they are primes simply by factoring them. Every prime number has exactly two factors, 1 and the number itself. If there are more or less than 2 factors, the number is not a prime. 1 has only one factor so it is not a prime, and composite numbers have 3 or more factors.