Search All of the Math Forum:
Views expressed in these public forums are not endorsed by
NCTM or The Math Forum.


Henry
Posts:
1,089
Registered:
12/6/04


Re: Two flavors of Prime Numbers involved in their running sums
Posted:
Jan 24, 2011 6:13 AM


On Jan 21, 2:10 pm, rom...@sbcglobal.net wrote: > Ok Henry > but counting a sequence is very straight forward. > > I made sure my work was in harmony with the published data. > > The series shows the following in the same run, making your claims > rather > lame. > > mark 1e6 at step:78497 PN : 999979 Sum: 3.754940E+10 Lp: 50.599179 > > mark 1e9 at step:50847533 PN : 999999929 Sum: 2.473951E+16 Lp: 78.441917 > > mark 1e10 at step:455052510 PN : 9999999943 Sum: 2.220822E+18 Lp: 87.787554 > > at step 1000000000, PN is 22801763489 sum Lp 91.138528 >
I think you will find most sources say there are 78498 primes smaller than 1 million, and that the largest of them is 999983, so their sum is 37550402023. Your other two also look as if they are out by one prime: http://oeis.org/A006880 http://oeis.org/A003618



