2 507 903 Exponent Status

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

PrimeNet Exponent Status

M_n

Details

Composite, with 1 known prime factor. Cofactor is composite.

Trial Factored to 2⁶⁸

TF target 2⁶³

Factored

Factor	Digits	Bits	Date
5015807	7	22.3	old

ECM

Digits	B1	Curves
25	50000	128 / 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)	2017-10-14	Oliver Kruse	83F1D1BFD6B6EC41	1	2312009	5	3
Verified	PRP without proof (not generated)	2017-11-30	storm5510	83F1D1BFD6B6EC41	1	1417165	5	3

History

Date	User	Type	Result
2022-09-01	USAFSS	NF-PM1	B1=360000, B2=311342850
2019-03-10	Joss	NF-PM1	B1=200000
2019-03-10	Joss	NF-PM1	B1=150000
2019-03-09	Joss	NF-PM1	B1=100000
2017-11-30	storm5510	C-PRP	M2507903/5015807 : 83F1D1BFD6B6EC41
2017-10-14	Oliver Kruse	C-PRP	M2507903/5015807 : 83F1D1BFD6B6EC41

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