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Topic: Relation between sum and product of primes
Replies: 14   Last Post: Jan 11, 2015 6:32 AM

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 mluttgens Posts: 80 Registered: 3/3/11
Re: Relation between sum and product of primes
Posted: Jan 10, 2015 11:06 AM

Le vendredi 9 janvier 2015 19:24:07 UTC+1, ventocil...@gmail.com a écrit :
> El jueves, 8 de enero de 2015, 8:44:46 (UTC-4:30), lut...@gmail.com escribió:
> > For instance,3+5+7=3x5
> >
> > Are there other examples of such relation?
> >
> > Thanks

>
> All are conjectures but I believe that the sum of sets of consecutive primes are
> sufficient powerful for to be equal to infinite primes, squares, primorials etc.
> Examples:
> 23 (Prime) = 5+7+11
> 7# (Primorial 7) = 2x3x5x7 = 210 = 13+17+19+23+2+9+31++41
> 49 (Square) = 13+17+19 = 7^2

The inverse problem is: Can any product of two primes be the sum of consecutive primes?

Date Subject Author
1/8/15 mluttgens
1/8/15 bert
1/8/15 mluttgens
1/8/15 mluttgens
1/8/15 ventocilla.jorge@gmail.com
1/8/15 Brian Q. Hutchings
1/8/15 ventocilla.jorge@gmail.com
1/9/15 mluttgens
1/9/15 ventocilla.jorge@gmail.com
1/10/15 mluttgens
1/10/15 bert
1/10/15 mluttgens
1/10/15 bert
1/10/15 quasi
1/11/15 mluttgens