Compare 639857 vs 639997

Property	639857	639997
Type	prime	prime
Unique factors	1	1
Total factors	1	1
Prime factorization	639857¹	639997¹
Prime factorization	639857	639997
Divisors count	2	2
Divisors	1, 639857	1, 639997
Number of properties	6	4
Additive primes		20349th
Chen primes	20372nd
Cousin primes (2nd member)	5629th
Isolated primes	40805th	40813th
Lucky primes		5977th
Primes	52066th	52074th
Prime triplets (3rd member)	2062nd
Sexy primes (2nd member)	11284th
Roman numberals
Base 2	10011100001101110001₂	10011100001111111101₂
Base 3	1012111201102₃	1012111220121₃
Base 4	2130031301₄	2130033331₄
Base 5	130433412₅	130434442₅
Base 6	21414145₆	21414541₆
Base 7	5303321₇	5303611₇
Base 8	2341561₈	2341775₈
Base 9	1174642₉	1174817₉
Base 10	639857₁₀	639997₁₀
Base 11	3a7809₁₁	3a7926₁₁
Base 12	26a355₁₂	26a451₁₂
Base 13	19531a₁₃	1953c7₁₃
Base 14	129281₁₄	129341₁₄
Base 15	c98c2₁₅	c9967₁₅
Base 16	9c371₁₆	9c3fd₁₆