27 487 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
1605515671	10	30.6	old
10938860967363289280658653201	29	93.1	2014-11-11 07:11:47

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	640 / 640
35	1000000	1566 / 1566
40	3000000	811 / 4588

Estimated T-Level: 35.9 ⓘ

TF below 2^114 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-09-21	Oliver Kruse	437C80EC50AA957A	2	0	1	3
Verified	2017-10-02	kkmrkkblmbrbk	437C80EC50AA957A	2	0	1	3
Verified	2017-12-07	ATH	437C80EC50AA957A	2	5853	1	3
Unverified	2020-04-17	Oliver Kruse	DEDD6F2DDC8B49__	2	24302	5	3

History

Date	User	Type	Result
2023-03-17	nordi	NF-PM1	B1=5000000000, B2=1516930270635780
2022-10-24	nordi	NF-PM1	B1=5000000000
2020-04-17	Oliver Kruse	C-PRP	M27487/1605515671/10938860967363289280658653201 : DEDD6F2DDC8B49__ PRP without proof (small exponent)
2017-12-07	ATH	C-PRP	M27487/1605515671/10938860967363289280658653201 : 437C80EC50AA957A PRP without proof (small exponent)
2017-10-02	kkmrkkblmbrbk	C-PRP	M27487/1605515671/10938860967363289280658653201 : 437C80EC50AA957A PRP without proof (not generated)
2017-09-21	Oliver Kruse	C-PRP	M27487/1605515671/10938860967363289280658653201 : 437C80EC50AA957A PRP without proof (not generated)
2017-09-21	Oliver Kruse	C-PRP	M27487/1605515671/10938860967363289280658653201 : 437C80EC50AA957A PRP without proof (not generated)
2016-12-21	kkmrkkblmbrbk	NF-PM1	B1=500000000, B2=10000000000, E=12
2014-11-11	James Hintz	F-ECM	Factor: 10938860967363289280658653201 / (ECM curve 10, B1=1000000, B2=100000000)