As a product of its prime factors: 3*5 = 15 or 3+5+7 = 15
It is: 2+13 = 15
5*3
15 and 16 are both composite numbers
Actually, 13 and 15 are not twin primes because twin primes are pairs of prime numbers that have a difference of 2 between them. In this case, 13 is a prime number, but 15 is not a prime number because it can be divided by 3 and 5 in addition to 1 and itself. Therefore, 13 and 15 do not meet the criteria to be considered twin primes.
False. Co-primes are not the same as twin primes.Co-primes are any numbers having no common factorsother than 1. Examples of co-primes are 8 and 9 or 15 and 32.Twin primes are pairs of prime numbers exactly 2 apart such as 11 and 13 or 659 and 661.
Product of primes for 15 3 x 5 = 15 Product of Primes for 36 2 x 2 x 3 x 3 = 36
3 and 5 are the primes 15 can be divided by 3 and 5, so it isn't a prime
17,19 29,31
16 = 1+15, 3+13, 5+11, 7+92,3,5,7,11,13 are primes < 1616 = 3+13 or 5+11
2 x 23.
This question is on my daughter's homework--Which shows 45 as a product of primes? (A) 15 x 3 (B) 3 x 5 x 3 (C) 1 x 5 x 9 (D) 1 x 3 x 15 Please help B. 3 and 5 are primes. Reject: A and D: 15 = 3*5 and so 15 is not prime. C: 9 = 3*3 and so 9 is not a prime.
Expressing 15 as a product of its primes is 3 x 5 = 15 Composite numbers can be broken down into a product of prime numbers.