M117 901 391 Mersenne number exponent details

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is 2 ^117901391 - 1

has 35491856 decimal digits

takes 544.475 GHz-days to do one PRP test

Last-known PrimeNet details:

Exponent is not assigned to anyone

0 primality tests remaining

	Residue	Status
L-L	-unknown-	-unknown-
PRP	-unknown-	-unknown-

	Trial Factoring			P-1 Factoring				Combined
	Limit	GHz-days	Probability	B1	B2	GHz-days	Probability	GHz-days	Probability
Actual	2⁶⁷	0.2520	59.7015%	-	-	-	-	0.2520	59.7015%
Target	2⁷⁶	129.8033	64.4737%	800000	140000000	56.1408	4.2090%	185.9441	65.9690%
Difference	-9	-129.5513	-4.7722%	-800000	-140000000	-56.1408	-4.2090%	-185.6921	-6.2675%

Known prime factors (2 factors, 86.1 bits, 0.00007302% known):

Remaining cofactor is PRP status unknown

						P-1		GHz-days
exponent	factor	digits	bits*	k	date found	min B1	min B2	min. TF	min. P-1	normal P-1
117901391	235802783	9	27.813	1 1	2007-09-27	1	1	1.517e-13	6.696e-6	1.363e-5
117901391	349833274145555377	18	58.279	1483584168 2³ × 3 × 11 × 5619637	2015-08-24	11	5619637	0.0004	2.0503	3.8292

1 Composite Factors:

P-1 results:
No P-1 results for M117901391

Trial Factoring results:

			Bits		Factor			GHz-Days		worth
date	userid	compid	from	to	factor	bits*	digits	spent	saved	worth
2015-08-24	TJAOI	Manual testing	2⁵⁸	2⁵⁹*	349833274145555377	58.279	18	3.72200e-5	1,234	8.43578e-5

ECM factoring results:
No ECM results for M117901391

Lucas-Lehmer results:
No L-L results for M117901391

PRP results:
No PRP results for M117901391

P-1 factor-bounds graph:

X = B1; Y = B2
size of marker relates to size of factor
mouse-over any factor marker (circle) to see additional info
mouse-over any stage bound text to see additional info

10⁰

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10¹

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10³

10⁴

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10⁷

TF factor-bounds graph:

2⁵⁹

this exponent TF target: 76

TF double-checked to: 67.9

2⁵⁰

2⁶⁰

2⁷⁰

2⁸⁰

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Last modified: 2023-10-02T12:12:48+00:00