1 939 237 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

Factored

Factor	Digits	Bits	Date
150929550466043110769641	24	77.0	2021-03-04 06:49:55

ECM

Digits	B1	Curves
25	50000	258 / 280

Estimated T-Level: 24.6 ⓘ

TF below 2^77 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Robert Kulagowski	7028B01007D45722	0
Verified (Factored)	1998-12-21	Peter Ramm	7028B01007D45722	1651583
Verified (Factored)	2015-07-12	MadPoo	7028B01007D45722	217563

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2021-03-04	mrh	F3D3941345B0C90A	1	248531	5	3

History

Date	User	Type	Result
2021-03-04	Eric Lehmer	CERT	PRP Certification Proof certified good
2021-03-04	mrh	C-PRP	M1939237/150929550466043110769641 : F3D3941345B0C90A PRP proof power = 7 PRP: Verified Proof certified good
2021-03-04	mnd9	F-ECM	Factor: 150929550466043110769641 / (ECM curve 6, B1=50000, B2=5000000, Sigma=1414268447278440)
2019-05-10	chuenkit	NF	no factor from 2^67 to 2^68
2018-02-10	mikr	NF-PM1	B1=8000000, B2=320000000, E=12
2018-02-04	Joss	NF-PM1	B1=1939237, B2=28312160, E=12
2017-12-11	TJAOI	NF	no factor from 2^66 to 2^67
2017-04-12	Joss	NF-PM1	B1=1415608, B2=14156080, E=12
2017-01-22	Joss	NF-PM1	B1=1179674
2017-01-04	Joss	NF-PM1	B1=983062
2016-12-24	Joss	NF-PM1	B1=819219
2016-12-17	Joss	NF-PM1	B1=682683
2016-12-15	Joss	NF-PM1	B1=568903
2016-02-23	Mark Rose	NF	no factor from 2^61 to 2^62
2016-02-23	Mark Rose	NF	no factor from 2^58 to 2^60
2016-02-23	Mark Rose	NF	no factor from 2^62 to 2^63
2015-10-08	Bruno Victal	NF-PM1	B1=500000, B2=15000000, E=12
2015-09-05	ramgeis	NF	no factor from 2^65 to 2^66
2015-07-12	MadPoo	C-LL	7028B01007D45722
2015-05-07	lycorn	NF	no factor from 2^64 to 2^65
2015-05-07	lycorn	NF	no factor from 2^63 to 2^64
2012-01-27	markr	NF-PM1	B1=275000, B2=6000000, E=12
2011-08-27	GrunwalderGIMP	NF	no factor from 2^1 to 2^63
2010-01-30	S485122	NF	no factor from 2^60 to 2^61

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