Factor Info

ID 188964
Size 261 digits / 867 bits
Status composite
Value 521891522401774167646827979826565218409018261500597790401641000157355669216000193022885128716638184360239928878305535956790882716769593386053489637869425303558629741031997650211930407357123338299429296356082487060863175938801910227469463960735997143677499931243

Factorizations

Primary (ID: 188742) 61865491146216383674809135780235913078137 (proven prime)
(ID: 188965) 8435906880110373174273320520712662006789820129535078623285378706002687039285813354089585995461915858557342286664886757984346296360491149335978647293244083602616336671236564026778776021349136696460567882740811360972724739 (composite)

Primary factorization keeps track of the smallest (known) prime factor. Secondary factorizations are old results kept when a new smaller prime factor is found, which occasionally happens with ECM.