M4 015 042 331 Mersenne number exponent details

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is 2 ^4015042331 - 1

has 1208648176 decimal digits

takes 1,007,292.333 GHz-days to do one PRP test

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	2⁷¹	0.1191	54.9296%	-	-	-	-	0.1191	54.9296%
Target	2⁹²	249,804.1296	65.2174%	20000000	6000000000	125,796.0639	4.2375%	375,600.1935	66.6913%
Difference	-21	-249,804.0105	-10.2878%	-20000000	-6000000000	-125,796.0639	-4.2375%	-375,600.0744	-11.7617%

Known prime factors (1 factor, 32.9 bits, 0.00000082% 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
4015042331	8030084663	10	32.903	1 1	2012-08-20	1	1	1.428e-13	0.0004	0.0007

P-1 results:
No P-1 results for M4015042331

Trial Factoring results:

			Bits		Factor			GHz-Days		worth
date	userid	compid	from	to	factor	bits*	digits	spent	saved	worth
2019-06-29			2³²	2³³	8030084663	32.903	10	3.39300e-16	237,109	7.26433e-16
2022-12-24	slaur	palvi2-rtx	2⁶⁸	2⁷¹		-	-	0.104	-	-

ECM factoring results:
No ECM results for M4015042331

Lucas-Lehmer results:
No L-L results for M4015042331

PRP results:
No PRP results for M4015042331

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

10¹

10⁰

10¹

TF factor-bounds graph:

2⁷¹

2³³

this exponent TF target: 92

2⁵⁰

2⁶⁰

2⁷⁰

2⁸⁰

2⁹⁰

2¹⁰⁰

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