1 825 891 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
535367020550023	15	48.9	old
25087933734732565649248321	26	84.4	2021-01-03 22:39:28

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)	2017-10-04	Oliver Kruse	33F89F013074BBF1	1	0	1	3
Verified (Factored)	2017-11-06	kkmrkkblmbrbk	33F89F013074BBF1	1	411189	1	3
Verified	2021-01-04	mrh	C569E8F97C65DC27	2	337159	5	3

History

Date	User	Type	Result
2021-01-04	schweigmon	CERT	PRP Certification Proof certified good
2021-01-04	mrh	C-PRP	M1825891/535367020550023/25087933734732565649248321 : C569E8F97C65DC27 PRP proof power = 7 PRP: Verified Proof certified good
2021-01-03	_p95holder_	F-ECM	Factor: 25087933734732565649248321 / (ECM curve 4, B1=50000, B2=5000000)
2017-11-06	kkmrkkblmbrbk	C-PRP	M1825891/535367020550023 : 33F89F013074BBF1 PRP: Verified (Factored) PRP without proof (not generated)
2017-10-04	Oliver Kruse	C-PRP	M1825891/535367020550023 : 33F89F013074BBF1 PRP: Verified (Factored) PRP without proof (not generated)
2016-03-16	alpertron	NF-PM1	B1=500000, B2=15000000, E=12