105 601 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
285625192740614298314984743273	30	97.9	old

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	640 / 640
35	1000000	262 / 1566

Estimated T-Level: 30.8 ⓘ

TF below 2^97 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-09-21	Oliver Kruse	9891E6510021CAF2	1	0	1	3
Verified	2017-10-13	kkmrkkblmbrbk	9891E6510021CAF2	1	62999	1	3
Verified	2020-04-17	Oliver Kruse	09B2B1D40982DEF1	1	71978	5	3
Verified	2022-04-15	LordJulius	09B2B1D40982DEF1	1	21715	5	3

History

Date	User	Type	Result
2022-04-17	LordJulius	NF	no factor from 2^62 to 2^63
2022-04-17	LordJulius	NF	no factor from 2^61 to 2^62
2022-04-17	LordJulius	NF	no factor from 2^60 to 2^61
2022-04-17	LordJulius	NF	no factor from 2^59 to 2^60
2022-04-17	LordJulius	NF	no factor from 2^58 to 2^59
2022-04-17	LordJulius	NF	no factor from 2^57 to 2^58
2022-04-17	LordJulius	NF	no factor from 2^1 to 2^57
2022-04-15	Simon Josefsson	CERT	PRP Certification Proof certified good
2022-04-15	LordJulius	C-PRP	M105601/285625192740614298314984743273 : 09B2B1D40982DEF1 PRP proof power = 5 PRP: Verified Proof certified good
2020-04-17	Oliver Kruse	C-PRP	M105601/285625192740614298314984743273 : 09B2B1D40982DEF1 PRP: Verified PRP without proof (small exponent)
2018-11-05	J.R. Allen	NF	no factor from 2^59 to 2^60
2018-11-05	J.R. Allen	NF	no factor from 2^58 to 2^59
2018-11-05	J.R. Allen	NF	no factor from 2^57 to 2^58
2018-10-25	J.R. Allen	NF	no factor from 2^1 to 2^57
2017-10-13	kkmrkkblmbrbk	C-PRP	M105601/285625192740614298314984743273 : 9891E6510021CAF2 PRP: Verified PRP without proof (not generated)
2017-09-21	Oliver Kruse	C-PRP	M105601/285625192740614298314984743273 : 9891E6510021CAF2 PRP: Verified PRP without proof (not generated)
2017-09-21	Oliver Kruse	C-PRP	M105601/285625192740614298314984743273 : 9891E6510021CAF2 PRP without proof (not generated)
2016-11-21	kkmrkkblmbrbk	NF-PM1	B1=100000000, B2=2000000000, E=12