What is the minimum value that can be written as sum of primes in n different ways?
For example, 10 is the minimum value that can be written as the sum of primes in exactly five different ways:
2 + 2 + 2 + 2 + 2 2 + 2 + 3 + 3 2 + 3 + 5 5 + 5 3 +7
8 can be written in 3 different ways but 7 can also be written in 3 different ways. So 7 is the right answer.
Solution Stats
Problem Comments
3 Comments
Solution Comments
Show comments
Loading...
Problem Recent Solvers7
Suggested Problems
-
2366 Solvers
-
It dseon't mettar waht oedrr the lrettes in a wrod are.
2080 Solvers
-
Convert Roman to Arabic Numerals
120 Solvers
-
Calculate the Number of Sign Changes in a Row Vector (No Element Is Zero)
898 Solvers
-
427 Solvers
More from this Author174
Problem Tags
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!
what are the three ways to obtain 7 by summing primes?! 2+5, 2+2+3, and?
Found at a blog that if a number is prime, wrongly some people consider this a sum. So the third way to obtain 7 would be 7 by itself, which is wrong, because it should actually be 7+0, but 0 is not a prime (and 7 by itself is not a sum). https://medium.com/@yevgeniy.v.filatov/counting-the-ways-to-express-a-number-as-a-sum-of-primes-e5e871b48193#:~:text=For%20the%20number%207%20we,as%20a%20sum%20of%20primes.
Maybe it's more precise to say partitions instead of a sum. In any case, solving CP 1240 helps here as well.