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Special primes (Posted on 2012-02-12)

There are two primes, both below 100, that evenly divide the sum of the primes less than themselves.

Find those two primes.

The only other such prime below 2,000,000 is M, the n-th prime.

Find M and n.

Submitted by Ady TZIDON

Rating: 5.0000 (1 votes)

Solution: (Hide)

5 AND 71 - for the first part - .As for the second part, 369,119 is the 31,464 th prime

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

Subject	Author	Date
re(2): computer solution	Ady TZIDON	2012-02-13 11:59:24
re: computer solution	Charlie	2012-02-12 18:33:42
computer solution	Charlie	2012-02-12 18:26:57

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