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Message boards : Cullen/Woodall prime search : New Cullen Prime

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rogue
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Joined: 8 Sep 07
Posts: 1256
ID: 12001
Credit: 18,565,548
RAC: 0
PPS LLR Bronze: Earned 10,000 credits (31,229)PSA Jade: Earned 10,000,000 credits (18,533,435)
Message 14974 - Posted: 20 Apr 2009 | 23:12:57 UTC

It's about time that someone knocked my 3+ year old record off. What I find really interesting is that I found the largest known Woodall at the time at about the same time. Since then, 5 new Woodalls have been discovered. I am rather surprised that only one Cullen has been found in the same time period.

Now if we could just find that elusive GCW 13 Cullen or Woodall...

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geoffProject donor
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Joined: 3 Aug 07
Posts: 99
ID: 10427
Credit: 343,437
RAC: 0
TRP Sieve (suspended) Bronze: Earned 10,000 credits (57,150)PSA Silver: Earned 100,000 credits (271,962)
Message 15016 - Posted: 22 Apr 2009 | 2:17:19 UTC - in response to Message 14974.

Congratulations Dennis and everyone else involved in this project, what a great find!

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Profile DoESProject donor
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Joined: 11 Oct 08
Posts: 784
ID: 30382
Credit: 75,064,140
RAC: 0
Discovered 1 Fermat divisor321 LLR Silver: Earned 100,000 credits (428,241)Cullen LLR Bronze: Earned 10,000 credits (13,527)PPS LLR Turquoise: Earned 5,000,000 credits (5,602,452)PSP LLR Bronze: Earned 10,000 credits (25,590)SoB LLR Bronze: Earned 10,000 credits (64,434)SGS LLR Bronze: Earned 10,000 credits (37,858)TRP LLR Bronze: Earned 10,000 credits (28,770)Woodall LLR Bronze: Earned 10,000 credits (21,547)Cullen/Woodall Sieve Ruby: Earned 2,000,000 credits (2,268,579)PPS Sieve Emerald: Earned 50,000,000 credits (65,501,036)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Bronze: Earned 10,000 credits (77,216)TRP Sieve (suspended) Bronze: Earned 10,000 credits (30,429)PSA Gold: Earned 500,000 credits (960,939)
Message 15136 - Posted: 26 Apr 2009 | 0:23:47 UTC - in response to Message 15016.


Yes -- congrats on an excellent prime number -- but I am a little curious as to why it shows as 6328548 x 2 ^ 6328548 + 1 in Prime Grid and when you look at Chris Caldwell's list it is 1582137 x 2 ^ 6328550 + 1 --- ??????

DoES
____________
Member of AtP

Shown here is an Australian native rat (Ratus Kickarsus)

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rogue
Volunteer developer
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Joined: 8 Sep 07
Posts: 1256
ID: 12001
Credit: 18,565,548
RAC: 0
PPS LLR Bronze: Earned 10,000 credits (31,229)PSA Jade: Earned 10,000,000 credits (18,533,435)
Message 15137 - Posted: 26 Apr 2009 | 0:31:43 UTC - in response to Message 15136.

Because 6328548 = 1582137 * 2^2. Since this is base 2, the Prime Pages will divide k by that base (if it can) and store the number that way.

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Profile DoESProject donor
Volunteer tester
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Joined: 11 Oct 08
Posts: 784
ID: 30382
Credit: 75,064,140
RAC: 0
Discovered 1 Fermat divisor321 LLR Silver: Earned 100,000 credits (428,241)Cullen LLR Bronze: Earned 10,000 credits (13,527)PPS LLR Turquoise: Earned 5,000,000 credits (5,602,452)PSP LLR Bronze: Earned 10,000 credits (25,590)SoB LLR Bronze: Earned 10,000 credits (64,434)SGS LLR Bronze: Earned 10,000 credits (37,858)TRP LLR Bronze: Earned 10,000 credits (28,770)Woodall LLR Bronze: Earned 10,000 credits (21,547)Cullen/Woodall Sieve Ruby: Earned 2,000,000 credits (2,268,579)PPS Sieve Emerald: Earned 50,000,000 credits (65,501,036)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Bronze: Earned 10,000 credits (77,216)TRP Sieve (suspended) Bronze: Earned 10,000 credits (30,429)PSA Gold: Earned 500,000 credits (960,939)
Message 15138 - Posted: 26 Apr 2009 | 3:36:32 UTC - in response to Message 15137.

Because 6328548 = 1582137 * 2^2. Since this is base 2, the Prime Pages will divide k by that base (if it can) and store the number that way.



Fair enough---( just curious)
____________
Member of AtP

Shown here is an Australian native rat (Ratus Kickarsus)

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mfbabb2Project donor
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Joined: 10 Oct 08
Posts: 510
ID: 30360
Credit: 20,784,268
RAC: 731
Eliminated 2 conjecture "k"s321 LLR Gold: Earned 500,000 credits (558,526)Cullen LLR Amethyst: Earned 1,000,000 credits (1,381,797)ESP LLR Amethyst: Earned 1,000,000 credits (1,579,711)Generalized Cullen/Woodall LLR Gold: Earned 500,000 credits (592,645)PPS LLR Gold: Earned 500,000 credits (595,556)PSP LLR Gold: Earned 500,000 credits (617,305)SoB LLR Amethyst: Earned 1,000,000 credits (1,067,002)SR5 LLR Amethyst: Earned 1,000,000 credits (1,513,710)SGS LLR Silver: Earned 100,000 credits (123,635)TRP LLR Gold: Earned 500,000 credits (707,543)Woodall LLR Amethyst: Earned 1,000,000 credits (1,519,175)321 Sieve (suspended) Bronze: Earned 10,000 credits (82,515)Cullen/Woodall Sieve Silver: Earned 100,000 credits (200,096)Generalized Cullen/Woodall Sieve (suspended) Bronze: Earned 10,000 credits (85,743)PPS Sieve Ruby: Earned 2,000,000 credits (3,069,138)Sierpinski (ESP/PSP/SoB) Sieve (suspended) Bronze: Earned 10,000 credits (20,039)TRP Sieve (suspended) Silver: Earned 100,000 credits (100,597)AP 26/27 Gold: Earned 500,000 credits (950,726)GFN Ruby: Earned 2,000,000 credits (4,130,955)WW (retired) Amethyst: Earned 1,000,000 credits (1,676,000)PSA Silver: Earned 100,000 credits (211,837)
Message 39825 - Posted: 30 Aug 2011 | 22:36:42 UTC - in response to Message 39321.

Perhaps you meant "Because 6328548 = 1582137 * 4^2." ?

No, 2^2 is correct (=4).
____________
Murphy (AtP)



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Message boards : Cullen/Woodall prime search : New Cullen Prime

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