1 915 841 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
253258853473	12	37.9	old
827286355170653969359	21	69.5	2020-10-30 14:15:08

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	106 / 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	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-09-30	alpertron	BC8653BC5FB6BBC7	1	0	1	3
Verified (Factored)	2017-10-20	Oliver Kruse	BC8653BC5FB6BBC7	1	375943	1	3
Verified	2020-10-30	mrh	5A570775FCB74A46	2	1746351	5	3

History

Date	User	Type	Result
2020-10-30	curtisc	CERT	PRP Certification Proof certified good
2020-10-30	mrh	C-PRP	M1915841/253258853473/827286355170653969359 : 5A570775FCB74A46 PRP proof power = 7 PRP: Verified Proof certified good
2020-10-30	nordi	F-ECM	Factor: 827286355170653969359 / (ECM curve 3, B1=50000, B2=5000000, Sigma=4055564771484674)
2017-10-20	Oliver Kruse	C-PRP	M1915841/253258853473 : BC8653BC5FB6BBC7 PRP: Verified (Factored) PRP without proof (not generated)
2017-09-30	alpertron	C-PRP	M1915841/253258853473 : BC8653BC5FB6BBC7 PRP: Verified (Factored) PRP without proof (not generated)
2016-03-17	alpertron	NF-PM1	B1=500000, B2=15000000, E=12