2 615 111 Exponent Status

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

PrimeNet Exponent Status

M_n

Details

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

Trial Factored to 2⁶⁸

TF target 2⁶³

Factored

Factor	Digits	Bits	Date
83683553	8	26.3	old
48216663466033	14	45.5	2014-01-21 11:47:08

ECM

Digits	B1	Curves
25	50000	127 / 280

Estimated T-Level: 22.3 ⓘ

TF below 2^69 is very unlikely to find new factors due to ECM effort.

Status	Proof	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	PRP without proof (not generated)	2017-10-17	Oliver Kruse	A16DED56D85B27E2	2	730891	5	3
Verified	PRP without proof (not generated)	2017-12-02	storm5510	A16DED56D85B27E2	2	1104451	5	3

History

Date	User	Type	Result
2019-07-04	alpertron	NF-PM1	B1=2000000, B2=60000000, E=12
2017-12-02	storm5510	C-PRP	M2615111/83683553/48216663466033 : A16DED56D85B27E2
2017-10-17	Oliver Kruse	C-PRP	M2615111/83683553/48216663466033 : A16DED56D85B27E2
2014-01-21	TJAOI	F	Factor: 48216663466033

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