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What is the sum of the largest prime less than 20 and more than 60?
The largest prime less than 20 is 19. The largest prime over 60 is 61. The sum of these two numbers is 80.
What are the three odd primes with the sum of 14?
There are not three odd primes with the sum of 14. The sum of three odd primes will be an odd number.
What is the sum of the largest prime less than 20 and the smallest prime more than 60?
80
Prove that if every even natural number greater than 2 is the sum of two primes then every odd natural number greater than 5 is the sum of three primes?
Given an arbitrary odd natural number greater than five, x, let y = x - 3, then y is an even number greater than 2. By assumption we have that y is the sum of two primes, say y1 and y2, but then x = y1 + y2 + 3 (which is the sum of three primes).
What is the sum of the largest prime less than 100 and the smallest prime greater than 100..?
They are: 97+101 = 198
Sum of all primes less than 100?
The sum of all prime numbers less than one hundred is 1104.
What is the sum of the two largest prime numbers less than 71?
The sum of the two largest prime numbers less than 71 is 128.
What prime number less than 20 can be written as a sum of differrent primes?
2 + 3 = 5
The largest integer that is not the sum of two or more different primes?
2
What is the sum of the largest prime less than 20 and more than 60?
The largest prime less than 20 is 19. The largest prime over 60 is 61. The sum of these two numbers is 80.
What is the sum of all of the two-digit primes that are greater than 12 but less than 99 and are still prime when their two digits are interchanged?
472.
What prime numbers less than 20 can be written as a sum of different primes?
5, 7, 13, 17 and 19 can be so written.
There are 25 prime numbers less than 100 is their sum even or odd?
Oh, what a happy little question! Let's take a look at those prime numbers. When we add them up, we find that their sum is actually even. Isn't that just a delightful surprise? Remember, in the world of numbers, there's always a little bit of magic waiting to be discovered.
What is the sum of the smallest prime and the largest prime less than 10?
9
What are the three odd primes with the sum of 14?
There are not three odd primes with the sum of 14. The sum of three odd primes will be an odd number.
How many of the prime numbers between 10 and 20 can be written as the sum of two primes?
All prime numbers greater than 2 are odd numbers. For an odd prime to be written as the sum of two primes, one of the primes must be 2 because two odd primes will produce an even sum. 11 cannot be written as the sum of two primes. 13 = 2 + 11. 17 cannot be written as the sum of two primes. 19 = 2 + 17.
What is the sum of the largest prime less than 20 and the smallest prime more than 60?
80
