Compare 665921 vs 666139

Property	665921	666139
Type	prime	prime
Unique factors	1	1
Total factors	1	1
Prime factorization	665921¹	666139¹
Prime factorization	665921	666139
Divisors count	2	2
Divisors	1, 665921	1, 666139
Number of properties	4	4
Additive primes	21085th	21093rd
Chen primes	21123rd
Cousin primes (1st member)		5825th
Isolated primes		42372nd
Primes	54016th	54035th
Twin primes (1st member)	5830th
Roman numberals
Base 2	10100010100101000001₂	10100010101000011011₂
Base 3	1020211110202₃	1020211202211₃
Base 4	2202211001₄	2202220123₄
Base 5	132302141₅	132304024₅
Base 6	22134545₆	22135551₆
Base 7	5442314₇	5443045₇
Base 8	2424501₈	2425033₈
Base 9	1224422₉	1224684₉
Base 10	665921₁₀	666139₁₀
Base 11	415353₁₁	415531₁₁
Base 12	281455₁₂	2815b7₁₂
Base 13	1a4149₁₃	1a4286₁₃
Base 14	13497b₁₄	134a95₁₄
Base 15	d249b₁₅	d2594₁₅
Base 16	a2941₁₆	a2a1b₁₆