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What is the sum of the first 15 prime numbers?
the sum of the first 15 prime numbers is 328 .
Can every square from 5 to 15 be wtitten as a sum of two prime numbers?
yes it does
What is the sum of two prime numbers that equal 15?
2 + 13
What are the sum of the prime numbers 15 and 35?
The given numbers of 15 and 35 are not prime numbers but they add up to 50
What two numbers have a product of -240 and a sum of 1?
The two numbers that have a product of -240 and a sum of 1 are 16 and -15. This is because 16 multiplied by -15 equals -240, and 16 added to -15 equals 1. These two numbers satisfy both conditions simultaneously.
Can every square from 5 to 15 be written as the sum of two prime numbers?
No, not all of them. One cannot.
A prime number times another prime number is?
If you multiply two prime numbers, the product (result) will be a composite number, not a prime number. A prime number has exactly two factors, 1 and itself. The product of two prime numbers will have those two numbers as factors, as well. The sum of two prime numbers might be prime if one of those two numbers is 2, the only even prime number, but otherwise it will not be a prime because two odd numbers will have an even sum, which means it is divisible by 2. Examples: 2 + 3 = 5 (prime) 3 + 7 = 10 (not prime) 13 + 17 = 30 (not prime) If you multiply two prime numbers, the sum of the digits of the product might or might not be prime. Examples: 2 x 7 = 14, sum of digits is 5 (prime) 2 x 11 = 22, sum of digits is 4 (not prime) 3 x 5 = 15, sum of digits is 6 (not prime) 3 x 7 = 21, sum of digits is 3 (prime) 5 x 7 = 35, sum of digits is 8 (prime)
Are composite numbers closed under addition?
No, they are not. You can add two composite numbers, 15 and 14 for example, and get a sum, 29, that is prime.
Can every square from 5-15 be written as the sum of 2 prime numbers?
There is only one square number from 5-15: 9. This can be written as the sum of 2 and 7, which are prime numbers.
What is the sum of the squares of a prime numbers that are less than 15?
It is 377.
What two prime numbers equal to 15?
The product of the prime numbers 3 and 5 is 15.
What are three prime numbers with a sum of 15?
11+3+1=15 but 1 is not a prime number. 3 + 5 + 7 = 15
