is 2 24536887 - 1
has 7386339 decimal digits
takes 19.902 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L4E0628A73E490716double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual27377.957965.7534%26000031850000.49322.5223%78.451166.6172%0.8638%
PrimeNet2660.601962.1212%11000040000000.37864.9651%0.980564.0019%1.8807%
GPU722709.738464.2857%17000050000000.50943.6182%10.247965.5779%1.2922%
Difference+3+68.2195+1.4677%+90000-1815000-0.0162-1.0960%+68.2033+1.0393%+1.0393%

Known prime factors:
No known factors for M24536887

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2004-06-04T00:00:00ANONYMOUSv4_computers2600003185000---0.493--2.522%
2005-09-03T00:00:00ANONYMOUSv4_computers2600003185000---0.493--2.522%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2001-09-16T00:00:00Net_Forcev4_computers21256--0.000--
2001-12-01T00:00:00Mattv4_computers21258--0.002--
2003-08-08T00:00:00Net_Forcev4_computers21260--0.006--
2004-02-07T00:00:00Helgenv4_computers21267--1.211--
2016-05-24T15:08:52VictordeHollanderManual testing267268--1.218--
2018-02-24T20:15:25VictordeHollanderManual testing268269--2.436--
2018-09-13T12:14:04ramgeisManual testing269270--4.873--
2021-08-05T15:58:12SRBaseManual testing270271--9.75--
2021-08-30T16:34:53TheJudgerManual testing271272--19.49--
2021-08-30T16:34:53TheJudgerManual testing272273--38.98--


ECM factoring results:
No ECM results for M24536887


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2004-06-21T00:00:00ANONYMOUSv4_computers4E0628A73E49071619.90
2005-09-03T00:00:00ANONYMOUSv4_computers4E0628A73E49071619.90
2010-09-05T01:34:00pix2k84E0628A73E49071619.90


PRP results:
No PRP results for M24536887


P-1 factor-bounds graph:
B1 = 260000, B2 = 3185000 (P-1 stage 2)
B1 = 260000 (P-1 stage 1)
104
105
106
104
105
106
107
TF factor-bounds graph:
273
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271
270
269
268
267
260
258
256
250
260
270
280
290
2100
Last modified: 2021-08-30T16:34:53+00:00