5 210 281 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
140552540257	12	37.0	old
352401041177358839	18	58.3	2015-08-25 11:06:27
6088093865294875024399	22	72.4	2021-08-15 12:41:37

ECM

Digits	B1	Curves
25	50000	22 / 280

Estimated T-Level: 20.4 ⓘ

TF below 2^63 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-11-24	Oliver Kruse	139528A74BB80D34	2	2266035	5	3
Verified (Factored)	2018-01-22	kkmrkkblmbrbk	139528A74BB80D34	2	2307398	5	3
Verified	2021-08-15	happy5214	139528A74BB80D34	3	4779605	5	3

P-1 factors

Date	Factor	B1	B2
2021-08-15	6088093865294875024399	2500000	240000000

History

Date	User	Type	Result
2021-08-15	curtisc	CERT	PRP Certification Proof certified good
2021-08-15	happy5214	C-PRP	M5210281/140552540257/352401041177358839/6088093865294875024399 : 139528A74BB80D34 PRP proof power = 7 PRP: Verified Proof certified good
2021-08-15	happy5214	F-PP1	Start=2/7, B1=1250000, B2=85000000, Factor: 6088093865294875024399
2021-08-15	happy5214	F-PM1	Factor: 6088093865294875024399 / (P-1, B1=2500000, B2=240000000)
2018-01-22	kkmrkkblmbrbk	C-PRP	M5210281/140552540257/352401041177358839 : 139528A74BB80D34 PRP: Verified (Factored) PRP without proof (not generated)
2017-11-24	Oliver Kruse	C-PRP	M5210281/140552540257/352401041177358839 : 139528A74BB80D34 PRP: Verified (Factored) PRP without proof (not generated)
2015-08-25	TJAOI	F	Factor: 352401041177358839 / TF: 58-59