19 and 23
42 has three prime factors: 2, 3 and 7
It is impossible for the product of two prime numbers to be prime. It is impossible for the sum of two prime numbers to be prime as long as one of the numbers isn't 2.
Some odd numbers can be written as the sum of prime numbers. 2 + 3 = 5
2 and 3.
The only way for three prime numbers to have a sum of 42 is if one of the prime numbers is 2, as 2 is the only even prime number. The other two prime numbers must add up to 40, which can only be achieved by 3 and 37. Therefore, the three prime numbers that have a sum of 42 are 2, 3, and 37.
37, 3, 2
37 and 5
19 and 23
There are not three prime numbers that have the sum of 3. The smallest prime number is 2. If all three prime numbers were 2, the sum would 2 + 2 + 2 = 6, so that is the smallest number that is the sum of three prime numbers.
The sum of two prime numbers greater than 2 is an even number. The sum of 2 and any other prime number is an odd number.
37 and 5 31 and 11 29 and 13 23 and 19
The sum of the two prime numbers 3 and 73 is 76.
42 has three prime factors: 2, 3 and 7
5
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.
It is impossible for the product of two prime numbers to be prime. It is impossible for the sum of two prime numbers to be prime as long as one of the numbers isn't 2.