1 879 511 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
755563423	9	29.5	old
139975327321873242276439	24	76.9	2021-09-24 00:10:06

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	Oliver Kruse	1F3DBEFD0EE2F899	1	0	1	3
Verified (Factored)	2017-11-08	ATH	1F3DBEFD0EE2F899	1	938850	1	3
Verified	2021-09-25	_p95holder_	6EC03DE0F3C2EFB4	2	509461	5	3
Verified	2021-09-30	Chad Steenerson	6EC03DE0F3C2EFB4	2	1853416	5	3

History

Date	User	Type	Result
2021-09-30	GlennMaitz	CERT	PRP Certification Proof certified good
2021-09-30	Chad Steenerson	C-PRP	M1879511/755563423/139975327321873242276439 : 6EC03DE0F3C2EFB4 PRP proof power = 7 PRP: Verified Proof certified good
2021-09-25	_p95holder_	C-PRP	M1879511/755563423/139975327321873242276439 : 6EC03DE0F3C2EFB4 PRP: Verified PRP without proof (not generated)
2021-09-24	_p95holder_	F-ECM	Factor: 139975327321873242276439 / (ECM curve 2, B1=50000, B2=5000000)
2017-11-08	ATH	C-PRP	M1879511/755563423 : 1F3DBEFD0EE2F899 PRP: Verified PRP without proof (not generated)
2017-10-04	Oliver Kruse	C-PRP	M1879511/755563423 : 1F3DBEFD0EE2F899 PRP: Verified PRP without proof (not generated)
2016-03-16	alpertron	NF-PM1	B1=500000, B2=15000000, E=12