8 637 061 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
8830623211825772169559	22	72.9	2019-08-03 03:56:23

ECM

Digits	B1	Curves
25	50000	4 / 280

Estimated T-Level: 20.1 ⓘ

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

Status	Date	User	Residue	Shift
Verified (Factored)	2000-02-01	Hgin normaalilyseo	3941A0572E2FAE60	1778846
Verified (Factored)	2002-12-09	Garrett Wollman	3941A0572E2FAE60	844842

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2019-08-03	ATH	C2CB6713C9B6B610	1	5152215	5	3
Verified	2020-08-11	kutens	C2CB6713C9B6B610	1	4350290	5	3

History

Date	User	Type	Result
2020-08-11	kutens	C-PRP	M8637061/8830623211825772169559 : C2CB6713C9B6B610 PRP: Verified PRP without proof (not generated)
2019-08-03	ATH	C-PRP	M8637061/8830623211825772169559 : C2CB6713C9B6B610 PRP: Verified PRP without proof (not generated)
2019-08-03	arnaud	F-ECM	Factor: 8830623211825772169559 / (ECM curve 1, B1=50000, B2=5000000)
2018-04-22	monst	NF	no factor from 2^67 to 2^68
2016-02-04	snme2pm1	NF	no factor from 2^66 to 2^67
2015-05-25	VictordeHollander	NF	no factor from 2^65 to 2^66
2014-01-26	lycorn	NF	no factor from 2^64 to 2^65
2012-02-13	bcp19	NF-PM1	B1=100000, B2=1825000, E=6