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What 2 prime numbers whose sum is not a prime number?
Becouse every prime number (except 2) is odd, the sum of 2 prime numbers will always be even (and 2 is the only even prime). The exceptions are 11 and 2 for example; 11 = prime, 2 = prime and 13=prime.
A prime number whose digit sum is 7?
I would say: 43 Or 7
What the list of all twin prime numbers whose sum is less than 120?
Twin prime pairs having sums less than 120 are (3, 5), (5, 7), (11, 13), (17, 19), (29, 31), and (41, 43). Twin prime numbers having a sum less than 120 are 3 + 5 + 7 + 11 + 13 + 17 + 19 + 29 (totaling 104).
What are 2 prime numbers whose sum is 35?
none
When adding 2 prime number will the answer be prime?
The sum of any two prime numbers may or may not be prime. The sum of the two prime numbers 2 and 3 is the prime number 5, and the sum of the two prime numbers 5 and 7 is the composite number 12.
What twin prime number whose sum is 204?
How about: 199+5 = 204
Is 261 a prime number whose sum is 57?
No.
What are 2 prime numbers whose sum is a prime number?
2 and 3.
A prime number whose digit sum is 8?
17, 53, 71
What 2 digit number less than 40 is divisible by 1 prime number whose sum is a prime and whose difference is a prime?
29 is the answer. 29 is prime. 2+9=11 which is prime. 9-2=7 which is prime.
What is the sum of all 2-digit multiples of 7 whose digits sum to a prime number?
-5
What 2 numbers product is 23 and sum is 10?
There are no two numbers whose product is 23 and whose sum is 10. 23 is a prime number, and the only numbers whose product is 23 are 23 and 1. A prime number can only be divided by itself and 1.
What prime number between 30 and 40 has digits whose sum is 10?
37
What are the three smallest primes whose sum is a prime number?
3, 5 and 11
What is the smallest prime number whose sum of its digits forms a number that is a perfect cube?
I think it will be 17. The sum of digits is 8, which is the cube of 2.
What are two prime numbers less than 20 whose sum is also a prime number?
2 + 3 = 5
Which prime number between 40 and 60 has digits whose sum is 8?
53 is prime, and 5+3 = 8.
