is 2 160371637 - 1
has 48276674 decimal digits
takes 1,052.439 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual279763.434264.5570 %5000000500000047.57812.4478 %811.012365.4245 %
Target278381.716564.1026 %1000000180000000102.31593.8995 %484.032565.5024 %
Difference+1+381.7176+0.4544 %+4000000-175000000-54.7378-1.4517 %+326.9798-0.0778 %

Known prime factors (1 factor, 87.2 bits, 0.00005434% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
1603716371721107678181284472277604792787.153536599772371620947
11 × 17 × 8093 × 84629 × 4189673
2021-01-21846294189673195,4392.93354.0569

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2021-01-21Roland ClarksonManual testing5000000500000012787.15349.342.696%


Trial Factoring results:
5758596061626364656667686970717273747576777879
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2010-06-29Torchwood InstitutePhenom95502632640.012
2011-02-04Richardsvn_022642650.023
2013-02-22KayJongsmaHenk2652660.047
2015-05-03Alex Wu2662670.093
2016-03-04XZTManual testing2672680.186
2017-03-29La GüiraManual testing2682690.373
2017-03-29La GüiraManual testing2692700.746
2017-12-06Oliver KruseManual testing27027693.94
2021-01-19Roland ClarksonManual testing27627795.43
2021-01-19Roland ClarksonManual testing277278190.9
2021-01-19Roland ClarksonManual testing278279381.7


ECM factoring results:
No ECM results for M160371637


Lucas-Lehmer results:
No L-L results for M160371637


PRP results:
No PRP results for M160371637


CERT results:
No CERT results for M160371637


P-1 factor-bounds graph:
B1 = 5000000 (P-1 stage 1)
103
104
105
106
107
103
104
105
106
107
TF factor-bounds graph:
279
278
277
276
270
269
268
267
266
265
264
this exponent TF target: 78
TF double-checked to: 67
250
260
270
280
290
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Last modified: 2024-03-13T02:15:48+00:00