Re: primes
- From: Phil Carmody <thefatphil_demunged@xxxxxxxxxxx>
- Date: 31 Jul 2007 19:31:06 +0300
"Peter Webb" <webbfamily@xxxxxxxxxxxxxxxxxxxxxxxxx> writes:
"Phil Carmody" <thefatphil_demunged@xxxxxxxxxxx> wrote in message
news:87hcnl6jd6.fsf@xxxxxxxxxxxxxxxxxxxxxxx
"Rod" <RodRodRodRod@xxxxxxxxxxx> writes:
What's the largest number for which it is known that there are no
unknown primes less then it.
Impossible to answer. What does "knowing" a prime consist of?
What is the largest number n for which pi(n) - the number of primes
less than n - is known exactly?
That should do it.
10^23. T.O.S. calculated it twice a few years ago, and came up with
a discrepancy of 1. However, I believe he's redone the calculations
a third time, and got an agreement. However, it's not been independently
verified, but that's a big job.
Of course, if you trust that figure, then pi(10^23+10^9) really
ain't that hard...
Phil
--
Dear aunt, let's set so double the killer delete select all.
-- Microsoft voice recognition live demonstration
.
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