Compare 645131 vs 645142

Property	645131	645142
Type	prime	semiprime
Unique factors	1	2
Total factors	1	2
Prime factorization	645131¹	2¹ × 322571¹
Prime factorization	645131	2 × 322571
Divisors count	2	4
Divisors	1, 645131	1, 2, 322571, 645142
Number of properties	3	1
Isolated primes	41120th
Primes	52459th
Semiprimes		138189th
Sexy primes (1st member)	11363rd
Roman numberals
Base 2	10011101100000001011₂	10011101100000010110₂
Base 3	1012202221202₃	1012202222011₃
Base 4	2131200023₄	2131200112₄
Base 5	131121011₅	131121032₅
Base 6	21454415₆	21454434₆
Base 7	5324564₇	5324611₇
Base 8	2354013₈	2354026₈
Base 9	1182852₉	1182864₉
Base 10	645131₁₀	645142₁₀
Base 11	400773₁₁	400783₁₁
Base 12	27140b₁₂	27141a₁₂
Base 13	197846₁₃	197854₁₃
Base 14	12b16b₁₄	12b178₁₄
Base 15	cb23b₁₅	cb247₁₅
Base 16	9d80b₁₆	9d816₁₆