1 500 619 Exponent Status

Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

M_n

Status

Details

Factored

Factor	Digits	Bits	Date
39413618007004609917341431	26	85.0	2019-12-29 12:16:21

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	103 / 640

Estimated T-Level: 25.8 ⓘ

TF below 2^81 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Jay R. Hill	1009008C9429528A	0
Verified (Factored)	1998-10-25	Terry S. Arnold	1009008C9429528A	1359664
Verified (Factored)	2015-07-03	MadPoo	1009008C9429528A	960834

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2019-12-29	Christoph Zenger	D22927301B1CDA58	1	595454	5	3
Verified	2019-12-30	Niels_Mache_Nextcloud	D22927301B1CDA58	1	344249	5	3

History

Date	User	Type	Result
2019-12-30	Niels_Mache_Nextcloud	C-PRP	M1500619/39413618007004609917341431 : D22927301B1CDA58 PRP: Verified PRP without proof (not generated)
2019-12-29	Christoph Zenger	C-PRP	M1500619/39413618007004609917341431 : D22927301B1CDA58 PRP: Verified PRP without proof (not generated)
2019-12-29	mnd9	F-ECM	Factor: 39413618007004609917341431 / (ECM curve 13, B1=250000, B2=25000000, Sigma=8506304920795470)
2019-10-10	mnd9	NF	no factor from 2^68 to 2^69
2018-11-20	Joss	NF-PM1	B1=10000000, B2=301624419, E=12
2018-06-06	ramgeis	NF	no factor from 2^67 to 2^68
2018-04-02	TJAOI	NF	no factor from 2^66 to 2^67
2016-02-23	Mark Rose	NF	no factor from 2^62 to 2^63
2016-02-23	Mark Rose	NF	no factor from 2^58 to 2^61
2016-02-23	Mark Rose	NF	no factor from 2^61 to 2^62
2015-09-26	ramgeis	NF	no factor from 2^65 to 2^66
2015-07-03	MadPoo	C-LL	1009008C9429528A
2015-01-06	VictordeHollander	NF-PM1	B1=10000000, B2=200000000, E=12
2015-01-04	snme2pm1	NF	no factor from 2^64 to 2^65
2015-01-04	snme2pm1	NF	no factor from 2^63 to 2^64
2010-02-19	GrunwalderGIMP	NF	no factor from 2^1 to 2^63
2009-07-17	BigBrother	NF-PM1	B1=200000, B2=5000000, E=6