31 018 147 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
10017504023150933608729	23	73.1	2021-09-11 12:13:35

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
Bad	2006-03-14	jim barchuk	43B061A023DA686A	28346371
Verified (Factored)	2006-10-24	Torsten	AEED8418285E5A7F	7013227
Verified (Factored)	2013-02-19	ANONYMOUS	AEED8418285E5A7F	29997179

History

Date	User	Type	Result
2021-09-11	ATH	F-PP1	Start=2/7, B1=300000, B2=12300000, Factor: 10017504023150933608729
2019-06-21	LaurV	NF	no factor from 2^71 to 2^72
2018-05-27	ramgeis	NF	no factor from 2^70 to 2^71
2013-02-19	ANONYMOUS	C-LL	AEED8418285E5A7F
2013-01-26	Chuck	NF	no factor from 2^69 to 2^70
2012-05-08	bcp19	NF	no factor from 2^68 to 2^69
2009-01-13	jbarchuk	NF-PM1	B1=385000, B2=10683750