521 107 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
3035969383	10	31.5	old
295739413334236801389489165866839	33	107.9	2018-06-08 13:18:12

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	228 / 640

Estimated T-Level: 26.8 ⓘ

TF below 2^84 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-09-27	Oliver Kruse	0899D30765E06BB0	1	0	1	3
Verified (Factored)	2017-09-28	Oliver Kruse	0899D30765E06BB0	1	0	1	3
Verified (Factored)	2017-11-07	kkmrkkblmbrbk	0899D30765E06BB0	1	277360	1	3
Verified	2018-06-10	Daniil Tsarkov	229A2572E0F6D334	2	491824	5	3
Verified	2018-06-11	Chang Chia-Tche	229A2572E0F6D334	2	374897	5	3

History

Date	User	Type	Result
2021-05-01	happy5214	NF-PP1	Start=2/7, B1=7500000, B2=645000000
2021-04-30	George Woltman	NF-PM1	B1=15000000, B2=1815000000
2018-06-11	Chang Chia-Tche	C-PRP	M521107/3035969383/295739413334236801389489165866839 : 229A2572E0F6D334 PRP: Verified PRP without proof (small exponent)
2018-06-10	Daniil Tsarkov	C-PRP	M521107/3035969383/295739413334236801389489165866839 : 229A2572E0F6D334 PRP: Verified PRP without proof (small exponent)
2018-06-08	TJAOI	F-ECM	Factor: 295739413334236801389489165866839 / (ECM curve 15, B1=250000, B2=25000000)
2017-11-07	kkmrkkblmbrbk	C-PRP	M521107/3035969383 : 0899D30765E06BB0 PRP: Verified PRP without proof (small exponent)
2017-09-28	Oliver Kruse	C-PRP	M521107/3035969383 : 0899D30765E06BB0 PRP: Verified PRP without proof (not generated)
2017-09-27	Oliver Kruse	C-PRP	M521107/3035969383 : 0899D30765E06BB0 PRP: Verified PRP without proof (not generated)
2016-03-16	alpertron	NF-PM1	B1=1500000, B2=50000000, E=12