Compare 665981 vs 665987

Property	665981	665987
Type	prime	composite number
Unique factors	1	3
Total factors	1	3
Prime factorization	665981¹	7¹ × 89¹ × 1069¹
Prime factorization	665981	7 × 89 × 1069
Divisors count	2	8
Divisors	1, 665981	1, 7, 89, 623, 1069, 7483, 95141, 665987
Number of properties	4	0
Chen primes	21124th
Primes	54020th
Twin primes (1st member)	5831st
Ulam primes	3967th
Roman numberals
Base 2	10100010100101111101₂	10100010100110000011₂
Base 3	1020211112222₃	1020211120012₃
Base 4	2202211331₄	2202212003₄
Base 5	132302411₅	132302422₅
Base 6	22135125₆	22135135₆
Base 7	5442431₇	5442440₇
Base 8	2424575₈	2424603₈
Base 9	1224488₉	1224505₉
Base 10	665981₁₀	665987₁₀
Base 11	4153a8₁₁	415403₁₁
Base 12	2814a5₁₂	2814ab₁₂
Base 13	1a4194₁₃	1a419a₁₃
Base 14	1349c1₁₄	1349c7₁₄
Base 15	d24db₁₅	d24e2₁₅
Base 16	a297d₁₆	a2983₁₆