2 143 381 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
304360103	9	28.2	old
7033357797912590997631	22	72.6	2016-03-12 11:17:53
40512285925250697830281	23	75.1	2022-05-26 11:33:28

ECM

Digits	B1	Curves
25	50000	98 / 280

Estimated T-Level: 21.8 ⓘ

TF below 2^67 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-10-08	Oliver Kruse	22ACDF81E6B04859	2	0	1	3
Verified (Factored)	2017-11-18	kkmrkkblmbrbk	22ACDF81E6B04859	2	1824487	1	3
Verified	2022-05-31	ATH	E03AC6E2E5AD0CDC	3	118795	5	3

P-1 factors

Date	Factor	B1	B2
2016-03-12	7033357797912590997631	500000	15000000

History

Date	User	Type	Result
2022-05-31	Jaron Wakley	CERT	PRP Certification Proof certified good
2022-05-31	ATH	C-PRP	M2143381/304360103/7033357797912590997631/40512285925250697830281 : E03AC6E2E5AD0CDC PRP proof power = 7 PRP: Verified Proof certified good
2022-05-26	debrouxl	F-ECM	Factor: 40512285925250697830281 / (ECM curve 3, B1=50000, B2=6500000, Sigma=8097357910124169)
2017-11-18	kkmrkkblmbrbk	C-PRP	M2143381/304360103/7033357797912590997631 : 22ACDF81E6B04859 PRP: Verified (Factored) PRP without proof (not generated)
2017-10-08	Oliver Kruse	C-PRP	M2143381/304360103/7033357797912590997631 : 22ACDF81E6B04859 PRP: Verified (Factored) PRP without proof (not generated)
2016-03-12	alpertron	F-PM1	Factor: 7033357797912590997631 / (P-1, B1=500000, B2=15000000, E=12)