Compare 661004 vs 661009

Property	661004	661009
Type	composite number	prime
Unique factors	3	1
Total factors	4	1
Prime factorization	2² × 257¹ × 643¹	661009¹
Prime factorization	2 × 2 × 257 × 643	661009
Divisors count	12	2
Divisors	1, 2, 4, 257, 514, 643, 1028, 1286, 2572, 165251, 330502, 661004	1, 661009
Number of properties	0	3
Isolated primes		42071st
Lucky primes		6149th
Primes		53648th
Roman numberals
Base 2	10100001011000001100₂	10100001011000010001₂
Base 3	1020120201122₃	1020120201211₃
Base 4	2201120030₄	2201120101₄
Base 5	132123004₅	132123014₅
Base 6	22100112₆	22100121₆
Base 7	5422061₇	5422066₇
Base 8	2413014₈	2413021₈
Base 9	1216648₉	1216654₉
Base 10	661004₁₀	661009₁₀
Base 11	411693₁₁	411698₁₁
Base 12	27a638₁₂	27a641₁₂
Base 13	1a1b36₁₃	1a1b3b₁₃
Base 14	132c68₁₄	132c6d₁₄
Base 15	d0cbe₁₅	d0cc4₁₅
Base 16	a160c₁₆	a1611₁₆