Compare 661988 vs 661993

Property	661988	661993
Type	composite number	prime
Unique factors	3	1
Total factors	4	1
Prime factorization	2² × 167¹ × 991¹	661993¹
Prime factorization	2 × 2 × 167 × 991	661993
Divisors count	12	2
Divisors	1, 2, 4, 167, 334, 668, 991, 1982, 3964, 165497, 330994, 661988	1, 661993
Number of properties	0	5
Isolated primes		42128th
Lucky primes		6152nd
Primes		53717th
Sexy primes (2nd member)		11599th
Super primes		5474th
Roman numberals
Base 2	10100001100111100100₂	10100001100111101001₂
Base 3	1020122002002₃	1020122002021₃
Base 4	2201213210₄	2201213221₄
Base 5	132140423₅	132140433₅
Base 6	22104432₆	22104441₆
Base 7	5424665₇	5425003₇
Base 8	2414744₈	2414751₈
Base 9	1218062₉	1218067₉
Base 10	661988₁₀	661993₁₀
Base 11	4123a8₁₁	412402₁₁
Base 12	27b118₁₂	27b121₁₂
Base 13	1a2412₁₃	1a2417₁₃
Base 14	13336c₁₄	133373₁₄
Base 15	d1228₁₅	d122d₁₅
Base 16	a19e4₁₆	a19e9₁₆