15 21 33 35 42 45 75 77
17
nope it isn't : 11 x 17 = 187.No, 187 is not a prime number. 11 times 17 equals 187. Both are prime numbers, so the prime factorization of 187 is 11 X 17.
15 is composite number 17, 19 and 23 are prime numbers.
13 is prime so it is not the number. 15 is the product of 3 and 5, two prime numbers, so it fits the conditions. 17 is prime so it is not the number. 19 is prime so it is not the number. 15 is the only odd number between 11 and 21 that fits the conditions. However, if 21 is included in the range, it also is the product of two prime numbers: 3 x 7.
The prime factors of 336,600 are: 2 3 5 11 17 (17 - 2 = 15)
Both 11 and 17 are prime numbers.
Number 17 is but 15 isn't as 5x3 isn't a prime number
17 and 11 are prime numbers; the product of 17 and 11 is not.
17
nope it isn't : 11 x 17 = 187.No, 187 is not a prime number. 11 times 17 equals 187. Both are prime numbers, so the prime factorization of 187 is 11 X 17.
5, 11 and 17 are prime number but 9 and 27 are composite numbers
Even number bigger than two are never prime so cross them out, leaving11,13,15,17,19Any number ending in 5 is divisible by 5 and so can not be prime,This leaves 11,13,17,19 which all could be prime and actually are.
3 x 5 = 15, so 15 is not a prime number.
It is 17.
well prime numbers are 1 2 3 5 7 11 13 15 17
The first four prime numbers greater than 10 are , 11, 13,17,19 Their mean is (11 + 13 + 17 + 19) / 4 = 15 NB '15' is NOT a prime number.
11 and 17 is prime number so it cannot be divided by any whole number.