1 101 103 Exponent Status

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

PrimeNet Exponent Status

M_n

Status

Details

Composite, with 1 known prime factor. Cofactor is composite.

Factored

Factor	Digits	Bits	Date
123323537	9	26.9	old

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	100 / 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)	2025-09-01	Kriesel	2E5C52CAFB64171B	0	1	3

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-09-29	Oliver Kruse	4A7A8FE43E4100EB	1	0	1	3
Verified	2017-10-16	Oliver Kruse	4A7A8FE43E4100EB	1	907684	1	3
Verified	2018-01-01	ATH	4A7A8FE43E4100EB	1	833570	1	3

History

Date	User	Type	Result
2025-09-02	Poao	CERT	PRP Certification CERT proof power = 6 Proof certified good
2025-09-01	Kriesel	C-PRP	2E5C52CAFB64171B PRP proof power = 6 PRP: Verified (Factored) Proof certified good
2024-12-31	yuriy_5-1	NF-PM1	B1=218000, B2=856035180
2018-01-01	ATH	C-PRP	M1101103/123323537 : 4A7A8FE43E4100EB PRP: Verified PRP without proof (not generated)
2017-10-16	Oliver Kruse	C-PRP	M1101103/123323537 : 4A7A8FE43E4100EB PRP: Verified PRP without proof (not generated)
2017-09-29	Oliver Kruse	C-PRP	M1101103/123323537 : 4A7A8FE43E4100EB PRP: Verified PRP without proof (not generated)
2016-03-17	alpertron	NF-PM1	B1=300000, B2=10000000, E=12