THey are 10, 20, 30, 40, 50, 60, 70, 80 and 90.
There are 25 prime numbers less than 100
The prime numbers less then 86 are; 2,3,5,7,11,13,17,19,23,29,31,37,41,43,47,53,59,61,67,71,73,79 and 83.
There are 46 prime numbers less than 200.
Numbers with exactly 6 factors are perfect squares of prime numbers. The prime factorization of a number with exactly 6 factors is in the form ( p^2 ), where ( p ) is a prime number. There are 10 prime numbers less than 30: 2, 3, 5, 7, 11, 13, 17, 19, 23, and 29. So, there are 10 numbers less than 30 that have exactly 6 factors.
467 is already prime. No factorization is required.
THey are 10, 20, 30, 40, 50, 60, 70, 80 and 90.
31
10, 20, 30, 40, 50, 60, 70, 80, 90
To find prime numbers less than 100, the sieve of eratosthenes filters out 1 and all multiples of 2, 3, 5, and 7. All remaining numbers less than 100 are primes.
Well, well, well, look at you trying to stump me. The prime numbers less than 30 that multiply to 1955 are 5, 13, and 31. Yep, you heard me right, 31 is not less than 30, but it sure is a prime number that gets the job done.
There are 25 prime numbers less than 100
There are 35 prime numbers less than 150.
The prime numbers less then 86 are; 2,3,5,7,11,13,17,19,23,29,31,37,41,43,47,53,59,61,67,71,73,79 and 83.
There are 46 prime numbers less than 200.
Oh honey, let me break it down for you. The whole numbers less than 50 that have a prime factorization composed of a prime number squared are 4, 9, 25, and 49. So, if you're looking for those special little gems, there you have it.
Numbers with exactly 6 factors are perfect squares of prime numbers. The prime factorization of a number with exactly 6 factors is in the form ( p^2 ), where ( p ) is a prime number. There are 10 prime numbers less than 30: 2, 3, 5, 7, 11, 13, 17, 19, 23, and 29. So, there are 10 numbers less than 30 that have exactly 6 factors.