306 503 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
613007	6	19.2	old
31199941299271486517717734408177	32	104.6	2021-09-30 17:15:47

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	425 / 640

Estimated T-Level: 28.3 ⓘ

TF below 2^89 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-09-22	Oliver Kruse	15202F37CA6CAF06	1	0	1	3
Verified (Factored)	2017-10-12	Oliver Kruse	15202F37CA6CAF06	1	61821	1	3
Verified (Factored)	2017-12-11	ATH	15202F37CA6CAF06	1	59080	1	3
Verified (Factored)	2020-04-18	Oliver Kruse	476547F2A02474EA	1	68266	5	3
Verified	2021-09-30	H Michaelson	476547F2A02474EA	2	247318	5	3
Verified (Factored)	2022-05-12	Jorge Coveiro	476547F2A02474EA	1	130671	5	3
Verified (Factored)	2022-05-12	Jorge Coveiro	476547F2A02474EA	1	130671	5	3

History

Date	User	Type	Result
2024-02-23	Denial140	NF-PM1	B1=10000000, B2=206662045590
2024-02-22	Denial140	NF-PM1	B1=10000000
2023-03-17	Denial140	NF-PM1	B1=1000000, B2=65871826020
2022-05-12	Jorge Coveiro	C-PRP	M306503/613007 : 476547F2A02474EA PRP proof power = 5 PRP: Verified (Factored) PRP proof never uploaded
2022-02-06	Lisander Viaene	NF-PM1	B1=50000
2021-09-30	Ben Delo	CERT	PRP Certification Proof certified good
2021-09-30	H Michaelson	C-PRP	M306503/613007/31199941299271486517717734408177 : 476547F2A02474EA PRP proof power = 5 PRP: Verified Proof certified good
2021-09-30	nordi	F-ECM	Factor: 31199941299271486517717734408177 / (ECM curve 34, B1=250000, B2=38500000, Sigma=1316427502857922)
2020-04-18	Oliver Kruse	C-PRP	M306503/613007 : 476547F2A02474EA PRP: Verified (Factored) PRP without proof (small exponent)
2017-12-11	ATH	C-PRP	M306503/613007 : 15202F37CA6CAF06 PRP: Verified (Factored) PRP without proof (small exponent)
2017-10-12	Oliver Kruse	C-PRP	M306503/613007 : 15202F37CA6CAF06 PRP: Verified (Factored) PRP without proof (small exponent)
2017-09-22	Oliver Kruse	C-PRP	M306503/613007 : 15202F37CA6CAF06 PRP: Verified (Factored) PRP without proof (not generated)
2017-09-22	Oliver Kruse	C-PRP	M306503/613007 : 15202F37CA6CAF06 PRP without proof (not generated)