10 516 021 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 2⁷¹

TF target 2⁶⁸

Factored

Factor	Digits	Bits	Date
315480631	9	28.2	old

Status	Proof	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	Certified Good	2020-09-09	storm5510	CBC92C74BD2EBDD1	1	5054201	5	3

History

Date	User	Type	Result
2025-03-07	NStorm	NF-PM1	B1=3000000, B2=1643491080
2020-09-09	Ryan Propper	NF	no factor TF: 69-70
2020-09-09	Ryan Propper	NF	no factor TF: 70-71
2020-09-09	Ryan Propper	NF	no factor TF: 67-68
2020-09-09	Ryan Propper	NF	no factor TF: 68-69
2020-09-09	Ryan Propper	NF	no factor TF: 65-66
2020-09-09	Ryan Propper	NF	no factor TF: 66-67
2020-09-09	Ryan Propper	NF	no factor TF: 64-65
2020-09-09	Wentao Huang	CERT	Proof certified good
2020-09-09	storm5510	C-PRP	M10516021/315480631 : CBC92C74BD2EBDD1 Proof Certified Good Proof Power: 8