3 251 747 Exponent Status

Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

M_n

Status

Details

Composite, with 1 known prime factor. Cofactor is composite.

Factored

Factor	Digits	Bits	Date
140560015823	12	37.0	old

ECM

Digits	B1	Curves
25	50000	9 / 280

Estimated T-Level: 20.2 ⓘ

TF below 2^62 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-11-02	Oliver Kruse	0E6651614E114643	1	2784215	5	3
Verified	2017-12-13	kkmrkkblmbrbk	0E6651614E114643	1	1206060	5	3

History

Date	User	Type	Result
2022-09-11	Joss	NF-PM1	B1=1000000, B2=241175550
2022-03-13	Joss	NF-PM1	B1=1000000, B2=134343300
2022-01-03	Joss	NF	no factor from 2^68 to 2^69
2021-05-12	Joss	NF	no factor from 2^67 to 2^68
2021-01-09	Joss	NF-PM1	B1=325174, B2=3251747, E=6
2021-01-07	Joss	NF-PM1	B1=325174
2020-12-25	Joss	NF-PM1	B1=108391
2017-12-13	kkmrkkblmbrbk	C-PRP	M3251747/140560015823 : 0E6651614E114643 PRP: Verified PRP without proof (not generated)
2017-11-02	Oliver Kruse	C-PRP	M3251747/140560015823 : 0E6651614E114643 PRP: Verified PRP without proof (not generated)