38 999 453 Exponent Status

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

PrimeNet Exponent Status

M_n

Status

Details

Factored

Factor	Digits	Bits	Date
54589243485633452681879	23	75.5	2019-08-10 01:12:16

Status	Date	User	Residue	Shift
Verified (Factored)	2007-09-13	keith	E1AFFBC1A6A11B3F	17305203
Bad	2016-10-12	Xolotl	0000000000000000	27871901
Verified (Factored)	2016-10-13	MadPoo	E1AFFBC1A6A11B3F	31127159

P-1 factors

Date	Factor	B1	B2
2019-08-10	54589243485633452681879	445000	12348750

History

Date	User	Type	Result
2019-08-10	timbit	F-PM1	Factor: 54589243485633452681879 / (P-1, B1=445000, B2=12348750, E=12)
2019-06-12	monst	NF	no factor from 2^71 to 2^72
2016-10-13	MadPoo	C-LL	E1AFFBC1A6A11B3F
2016-10-12	Xolotl	P-LL	M38999453 is prime!
2014-12-11	Jerry Hallett	NF	no factor from 2^70 to 2^71
2014-10-14	HBendtz	NF	no factor from 2^69 to 2^70