Results

number digits date factorization method
$141!+142$ 212 13.02.2016 $42239405752897033572013976872901999$
c177
ecm
$(11^{351}-1)/10$ 220 22.04.2016 $2554226030979765239347014767575083823222930317013$
P172
snfs

Related Links

Numbers of the form $10^n+1$
Numbers of the form $(z^{41}-1)/(z-1)$
Near repdigit related numbers
Generalized Fermat numbers
Aliquot sequences