12 015 013 Exponent Status

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

PrimeNet Exponent Status

M_n

Status

Details

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

Factored

Factor	Digits	Bits	Date
288360313	9	28.1	old
387029040557561	15	48.5	2008-09-08 07:45:27

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2021-12-31	Ember_Edison	E45ACC4356432ED8	2	10219421	5	3

History

Date	User	Type	Result
2023-06-19	nordi	NF-PM1	B1=400000, B2=428204700
2021-12-31	Chad Steenerson	CERT	PRP Certification Proof certified good
2021-12-31	Ember_Edison	C-PRP	M12015013/288360313/387029040557561 : E45ACC4356432ED8 PRP proof power = 8 PRP: Verified Proof certified good
2021-12-06	nordi	NF-PM1	B1=400000, B2=109909800
2021-11-22	nordi	NF-PM1	B1=400000
2008-09-08	Will Edgington	F	Factor: 387029040557561