1 923 893 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
994873139898871	15	49.8	old
6901501456845421748010919	25	82.5	2021-11-21 05:14:39

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	3A79F8AC24BB6D33	1	0	1	3
Verified (Factored)	2017-11-10	Chang Chia-Tche	3A79F8AC24BB6D33	1	227615	1	3
Verified	2021-11-21	SRJ2877	E3AF57DAE282BD5E	2	1361870	5	3

History

Date	User	Type	Result
2021-11-21	Yoon	CERT	PRP Certification Proof certified good
2021-11-21	SRJ2877	C-PRP	M1923893/994873139898871/6901501456845421748010919 : E3AF57DAE282BD5E PRP proof power = 7 PRP: Verified Proof certified good
2021-11-21	_p95holder_	F-ECM	Factor: 6901501456845421748010919 / (ECM curve 5, B1=50000, B2=5000000)
2017-11-10	Chang Chia-Tche	C-PRP	M1923893/994873139898871 : 3A79F8AC24BB6D33 PRP: Verified (Factored) PRP without proof (not generated)
2017-10-04	Oliver Kruse	C-PRP	M1923893/994873139898871 : 3A79F8AC24BB6D33 PRP: Verified (Factored) PRP without proof (not generated)
2016-03-17	alpertron	NF-PM1	B1=500000, B2=15000000, E=12