perplexus.info :: Numbers : Goldbach revisited

Goldbach revisited (Posted on 2010-06-12)

The Goldbach Conjecture states that every even number greater than 2 can be expressed as a sum of two primes.
For example, 4=2+2 and 16 = 5 + 11.
What is the smallest number for which there are 5 different ways to express this number as a sum of two primes?

Submitted by Ady TZIDON

Rating: 3.0000 (2 votes)

Solution: (Hide)

Ans:48

48 = 5 + 43 = 7 + 41 = 11 + 37 = 17 + 31 = 19 + 29

Comments: ( You must be logged in to post comments.)

Subject	Author	Date
Puzzle Thoughts	K Sengupta	2024-03-01 20:31:15
Goldbach revisited	Ben Vitale	2010-07-02 02:06:53
re: computer solution (spoiler)	Charlie	2010-06-12 17:02:05
computer solution (spoiler)	Charlie	2010-06-12 15:44:56

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