Compare 638977 vs 639997

Property	638977	639997
Type	prime	prime
Unique factors	1	1
Total factors	1	1
Prime factorization	638977¹	639997¹
Prime factorization	638977	639997
Divisors count	2	2
Divisors	1, 638977	1, 639997
Number of properties	5	4
Additive primes		20349th
Isolated primes	40753rd	40813th
Lucky primes	5967th	5977th
Primes	52000th	52074th
Proth primes	194th
Sexy primes (2nd member)	11267th
Roman numberals
Base 2	10011100000000000001₂	10011100001111111101₂
Base 3	1012110111211₃	1012111220121₃
Base 4	2130000001₄	2130033331₄
Base 5	130421402₅	130434442₅
Base 6	21410121₆	21414541₆
Base 7	5300623₇	5303611₇
Base 8	2340001₈	2341775₈
Base 9	1173454₉	1174817₉
Base 10	638977₁₀	639997₁₀
Base 11	3a7089₁₁	3a7926₁₁
Base 12	269941₁₂	26a451₁₂
Base 13	194ac1₁₃	1953c7₁₃
Base 14	128c13₁₄	129341₁₄
Base 15	c94d7₁₅	c9967₁₅
Base 16	9c001₁₆	9c3fd₁₆