2 917 Exponent Status

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

PrimeNet Exponent Status

M_n

Status

Details

Composite, with 3 known prime factors. Cofactor is composite.

Factored

Factor	Digits	Bits	Date
22869281	8	24.4	old
114457247	9	26.8	old
49028383768543976339855110223	29	95.3	old

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	640 / 640
35	1000000	1566 / 1566
40	3000000	4588 / 4588
45	11000000	9201 / 9201
50	44000000	4166 / 16550

Estimated T-Level: 46.3 ⓘ

TF below 2^149 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	3C1DD11CD66664A9	3	0	1	3
Verified	2017-10-02	kkmrkkblmbrbk	3C1DD11CD66664A9	3	0	1	3
Verified	2017-12-07	ATH	3C1DD11CD66664A9	3	552	1	3
Verified	2020-04-17	Oliver Kruse	2FA54C0EFF8AB91B	3	2264	5	3
Verified	2024-02-03	Wentao Huang	2FA54C0EFF8AB91B	3	825	5	3

History

Date	User	Type	Result
2024-02-03	Wentao Huang	C-PRP	M2917/22869281/114457247/49028383768543976339855110223 : 2FA54C0EFF8AB91B PRP: Verified PRP without proof (small exponent)
2022-03-31	mikr	NF-PM1	B1=70000000000, B2=367004699921960100
2021-07-07	ViliamF	NF-PM1	B1=1000000000, B2=191000000000
2020-04-17	Oliver Kruse	C-PRP	M2917/22869281/114457247/49028383768543976339855110223 : 2FA54C0EFF8AB91B PRP: Verified PRP without proof (small exponent)
2017-12-07	ATH	C-PRP	M2917/22869281/114457247/49028383768543976339855110223 : 3C1DD11CD66664A9 PRP: Verified PRP without proof (small exponent)
2017-10-02	kkmrkkblmbrbk	C-PRP	M2917/22869281/114457247/49028383768543976339855110223 : 3C1DD11CD66664A9 PRP: Verified PRP without proof (not generated)
2017-09-21	Oliver Kruse	C-PRP	M2917/known_factors : 3C1DD11CD66664A9 PRP without proof (not generated)