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Message boards : Project Staging Area : 121 and 27 primes

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Roger
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Message 62798 - Posted: 20 Feb 2013 | 14:15:53 UTC

Can anyone help me out?
On the front page of Primegrid it lists under "Other significant primes":
121·2^4553899+1
27·2^3855094+1
Should these be -1 forms as stated above it in the "Recent Significant Primes"?

That being the case what are the latest finds for 121·2^n+1 and 27·2^n+1 ?
I can see 121·2^674360+1 and 27·2^2218064+1 at http://www.rieselprime.de/
However with 121·2^n+1 searched up to 4,999,992 there is a 99.97% chance a bigger prime should have been found.
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Michael Goetz
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Message 62800 - Posted: 20 Feb 2013 | 14:47:50 UTC - in response to Message 62798.

Can anyone help me out?
On the front page of Primegrid it lists under "Other significant primes":
121·2^4553899+1
27·2^3855094+1
Should these be -1 forms as stated above it in the "Recent Significant Primes"?

Fixed, thank you.

That being the case what are the latest finds for 121·2^n+1 and 27·2^n+1 ?
I can see 121·2^674360+1 and 27·2^2218064+1 at http://www.rieselprime.de/
However with 121·2^n+1 searched up to 4,999,992 there is a 99.97% chance a bigger prime should have been found.

Those are the only 27 and 121 primes found at primegrid.

____________
My lucky number is 75898524288+1

Message boards : Project Staging Area : 121 and 27 primes