Compare 661989 vs 661993

Property	661989	661993
Type	semiprime	prime
Unique factors	2	1
Total factors	2	1
Prime factorization	3¹ × 220663¹	661993¹
Prime factorization	3 × 220663	661993
Divisors count	4	2
Divisors	1, 3, 220663, 661989	1, 661993
Number of properties	1	5
Isolated primes		42128th
Lucky primes		6152nd
Primes		53717th
Semiprimes	141649th
Sexy primes (2nd member)		11599th
Super primes		5474th
Roman numberals
Base 2	10100001100111100101₂	10100001100111101001₂
Base 3	1020122002010₃	1020122002021₃
Base 4	2201213211₄	2201213221₄
Base 5	132140424₅	132140433₅
Base 6	22104433₆	22104441₆
Base 7	5424666₇	5425003₇
Base 8	2414745₈	2414751₈
Base 9	1218063₉	1218067₉
Base 10	661989₁₀	661993₁₀
Base 11	4123a9₁₁	412402₁₁
Base 12	27b119₁₂	27b121₁₂
Base 13	1a2413₁₃	1a2417₁₃
Base 14	13336d₁₄	133373₁₄
Base 15	d1229₁₅	d122d₁₅
Base 16	a19e5₁₆	a19e9₁₆