M4 015 261 007 Mersenne number exponent details

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is 2 ^4015261007 - 1

has 1208714004 decimal digits

takes 1,007,347.194 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	249,790.5250	65.2174%	20000000	6000000000	125,796.0639	4.2375%	375,586.5889	66.6913%
Difference	-21	-249,790.4059	-10.2878%	-20000000	-6000000000	-125,796.0639	-4.2375%	-375,586.4698	-11.7617%

Known prime factors (1 factor, 44.6 bits, 0.00000111% 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
4015261007	26886187702873	14	44.612	3348 2² × 3³ × 31	2012-08-20	27	31	1.151e-9	0.0099	0.0200

P-1 results:
No P-1 results for M4015261007

Trial Factoring results:

			Bits		Factor			GHz-Days		worth
date	userid	compid	from	to	factor	bits*	digits	spent	saved	worth
2019-06-29			2⁴⁴	2⁴⁵	26886187702873	44.612	14	5.66997e-10	237,120	1.21392e-9
2022-12-24	slaur	palvi2-rtx	2⁶⁸	2⁷¹		-	-	0.104	-	-

ECM factoring results:
No ECM results for M4015261007

Lucas-Lehmer results:
No L-L results for M4015261007

PRP results:
No PRP results for M4015261007

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

10²

10⁰

10¹

10²

TF factor-bounds graph:

2⁷¹

2⁴⁵

this exponent TF target: 92

2⁵⁰

2⁶⁰

2⁷⁰

2⁸⁰

2⁹⁰

2¹⁰⁰

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