Compare 639857 vs 639861

Property	639857	639861
Type	prime	semiprime
Unique factors	1	2
Total factors	1	2
Prime factorization	639857¹	3¹ × 213287¹
Prime factorization	639857	3 × 213287
Divisors count	2	4
Divisors	1, 639857	1, 3, 213287, 639861
Number of properties	6	1
Chen primes	20372nd
Cousin primes (2nd member)	5629th
Isolated primes	40805th
Primes	52066th
Prime triplets (3rd member)	2062nd
Semiprimes		137111th
Sexy primes (2nd member)	11284th
Roman numberals
Base 2	10011100001101110001₂	10011100001101110101₂
Base 3	1012111201102₃	1012111201120₃
Base 4	2130031301₄	2130031311₄
Base 5	130433412₅	130433421₅
Base 6	21414145₆	21414153₆
Base 7	5303321₇	5303325₇
Base 8	2341561₈	2341565₈
Base 9	1174642₉	1174646₉
Base 10	639857₁₀	639861₁₀
Base 11	3a7809₁₁	3a7812₁₁
Base 12	26a355₁₂	26a359₁₂
Base 13	19531a₁₃	195321₁₃
Base 14	129281₁₄	129285₁₄
Base 15	c98c2₁₅	c98c6₁₅
Base 16	9c371₁₆	9c375₁₆