1 760 567 Exponent Status

Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

M_n

Status

Details

Composite, with 3 known prime factors. Cofactor is composite.

Factored

Factor	Digits	Bits	Date
158451031	9	27.2	old
380786429423570952289	21	68.4	2019-08-04 12:46:14
562548171486497120543	21	68.9	2020-02-28 09:06:40

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	Shift	Type	Base
Verified (Factored)	2025-09-02	Kriesel	03C93952FD98B4A3	0	1	3

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-10-03	Oliver Kruse	4D60D392A2E4F7F3	1	0	1	3
Verified (Factored)	2017-11-04	Chang Chia-Tche	4D60D392A2E4F7F3	1	1168595	1	3
Verified (Factored)	2019-08-05	trebor	03C93952FD98B4A3	2	1201878	5	3
Verified (Factored)	2019-08-05	ATH	03C93952FD98B4A3	2	793667	5	3
Verified	2020-02-29	Niels_Mache_Nextcloud	03C93952FD98B4A3	3	426908	5	3

History

Date	User	Type	Result
2025-09-03	Oliver Kruse	CERT	PRP Certification CERT proof power = 6 Proof certified good
2025-09-02	Kriesel	C-PRP	03C93952FD98B4A3 PRP proof power = 6 PRP: Verified (Factored) Proof certified good
2020-02-29	Niels_Mache_Nextcloud	C-PRP	M1760567/158451031/380786429423570952289/562548171486497120543 : 03C93952FD98B4A3 PRP: Verified PRP without proof (not generated)
2020-02-28	Niels_Mache_Nextcloud	F-ECM	Factor: 562548171486497120543 / (ECM curve 3, B1=50000, B2=5000000, Sigma=2501242656204681)
2019-08-05	ATH	C-PRP	M1760567/158451031/380786429423570952289 : 03C93952FD98B4A3 PRP: Verified PRP without proof (not generated)
2019-08-05	trebor	C-PRP	M1760567/158451031/380786429423570952289 : 03C93952FD98B4A3 PRP: Verified PRP without proof (not generated)
2019-08-04	Chang Chia-Tche	F-ECM	Factor: 380786429423570952289 / (ECM curve 3, B1=50000, B2=5000000)
2017-11-04	Chang Chia-Tche	C-PRP	M1760567/158451031 : 4D60D392A2E4F7F3 PRP: Verified PRP without proof (not generated)
2017-10-03	Oliver Kruse	C-PRP	M1760567/158451031 : 4D60D392A2E4F7F3 PRP: Verified PRP without proof (not generated)
2016-03-16	alpertron	NF-PM1	B1=500000, B2=15000000, E=12