1 243 343 Exponent Status

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

PrimeNet Exponent Status

M_n

Status

Details

Composite, with 2 known prime factors. Cofactor is composite.

Factored

Factor	Digits	Bits	Date
119629490089	12	36.8	old
79840441611107920690361	23	76.1	2017-11-10 15:36:37

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	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-09-29	Oliver Kruse	E8A7B7861161FDA1	1	0	1	3
Verified (Factored)	2017-10-20	kkmrkkblmbrbk	E8A7B7861161FDA1	1	616207	1	3
Verified	2017-11-11	Oliver Kruse	F050046994021499	2	971307	5	3
Verified	2017-11-11	ATH	F050046994021499	2	951151	5	3

History

Date	User	Type	Result
2017-11-11	ATH	C-PRP	M1243343/119629490089/79840441611107920690361 : F050046994021499 PRP: Verified PRP without proof (not generated)
2017-11-11	Oliver Kruse	C-PRP	M1243343/119629490089/79840441611107920690361 : F050046994021499 PRP: Verified PRP without proof (not generated)
2017-11-10	TJAOI	F-ECM	Factor: 79840441611107920690361 / (ECM curve 7, B1=50000, B2=5000000)
2017-10-20	kkmrkkblmbrbk	C-PRP	M1243343/119629490089 : E8A7B7861161FDA1 PRP: Verified PRP without proof (not generated)
2017-09-29	Oliver Kruse	C-PRP	M1243343/119629490089 : E8A7B7861161FDA1 PRP: Verified PRP without proof (not generated)
2016-03-17	alpertron	NF-PM1	B1=300000, B2=10000000, E=12