1 608 109 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
16248333337	11	33.9	old
3125572111889	13	41.5	2008-07-15 07:43:05
571708836244199	15	49.0	2008-08-26 20:19:38
2934043058624515400740943503395085927	37	121.1	2021-07-19 01:01:39

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	107 / 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	kkmrkkblmbrbk	E2EE87F1A6D566EF	3	0	1	3
Verified (Factored)	2017-11-13	ATH	E2EE87F1A6D566EF	3	340838	1	3
Verified	2021-07-19	SRJ2877	2C9765E61957E243	4	1341368	5	3

P-1 factors

Date	Factor	B1	B2
2021-07-19	2934043058624515400740943503395085927	3000000	273000000

History

Date	User	Type	Result
2021-07-19	Ben Delo	CERT	PRP Certification Proof certified good
2021-07-19	SRJ2877	C-PRP	M1608109/16248333337/3125572111889/571708836244199/2934043058624515400740943503395085927 : 2C9765E61957E243 PRP proof power = 6 PRP: Verified Proof certified good
2021-07-19	Dylan Delgado	F-PM1	Factor: 2934043058624515400740943503395085927 / (P-1, B1=3000000, B2=273000000)
2017-11-13	ATH	C-PRP	M1608109/16248333337/3125572111889/571708836244199 : E2EE87F1A6D566EF PRP: Verified (Factored) PRP without proof (not generated)
2017-10-04	kkmrkkblmbrbk	C-PRP	M1608109/16248333337/3125572111889/571708836244199 : E2EE87F1A6D566EF PRP: Verified (Factored) PRP without proof (not generated)
2017-10-02	Oliver Kruse	C-PRP	M1608109/16248333337/3125572111889/571708836244199 : E2EE87F1A6D566EF PRP without proof (not generated)
2016-03-17	alpertron	NF-PM1	B1=500000, B2=15000000, E=12
2008-08-26	-Anonymous-	F	Factor: 571708836244199
2008-07-15	J Feitsma	F	Factor: 3125572111889