1 962 959 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
258721922119	12	37.9	old
8716143002178960989561	22	72.9	2022-02-25 11:38:34

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	56 / 640

Estimated T-Level: 25.4 ⓘ

TF below 2^80 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-10-05	Oliver Kruse	0F4500EF90D31A84	1	0	1	3
Verified (Factored)	2017-11-11	One Man	0F4500EF90D31A84	1	241006	1	3
Verified	2022-02-26	LordJulius	2B400A4D45A0226A	2	1539112	5	3
Verified	2022-02-27	_p95holder_	2B400A4D45A0226A	2	705000	5	3

History

Date	User	Type	Result
2023-10-14	USAFSS	NF-PM1	B1=576000, B2=490908600
2022-08-12	USAFSS	NF-PM1	B1=132000, B2=134381520
2022-02-27	_p95holder_	C-PRP	M1962959/258721922119/8716143002178960989561 : 2B400A4D45A0226A PRP: Verified PRP without proof (not generated)
2022-02-26	James Heinrich	CERT	PRP Certification Proof certified good
2022-02-26	LordJulius	C-PRP	M1962959/258721922119/8716143002178960989561 : 2B400A4D45A0226A PRP proof power = 7 PRP: Verified Proof certified good
2022-02-25	_p95holder_	F-ECM	Factor: 8716143002178960989561 / (ECM curve 2, B1=50000, B2=5000000)
2017-11-11	One Man	C-PRP	M1962959/258721922119 : 0F4500EF90D31A84 PRP: Verified PRP without proof (not generated)
2017-10-05	Oliver Kruse	C-PRP	M1962959/258721922119 : 0F4500EF90D31A84 PRP: Verified PRP without proof (not generated)