Compare 661983 vs 661987

Property	661983	661987
Type	composite number	prime
Unique factors	4	1
Total factors	4	1
Prime factorization	3¹ × 7¹ × 29¹ × 1087¹	661987¹
Prime factorization	3 × 7 × 29 × 1087	661987
Divisors count	16	2
Divisors	1, 3, 7, 21, 29, 87, 203, 609, 1087, 3261, 7609, 22827, 31523, 94569, 220661, 661983	1, 661987
Number of properties	0	5
Additive primes		20970th
Chen primes		21009th
Isolated primes		42127th
Primes		53716th
Sexy primes (1st member)		11599th
Roman numberals
Base 2	10100001100111011111₂	10100001100111100011₂
Base 3	1020122001220₃	1020122002001₃
Base 4	2201213133₄	2201213203₄
Base 5	132140413₅	132140422₅
Base 6	22104423₆	22104431₆
Base 7	5424660₇	5424664₇
Base 8	2414737₈	2414743₈
Base 9	1218056₉	1218061₉
Base 10	661983₁₀	661987₁₀
Base 11	4123a3₁₁	4123a7₁₁
Base 12	27b113₁₂	27b117₁₂
Base 13	1a240a₁₃	1a2411₁₃
Base 14	133367₁₄	13336b₁₄
Base 15	d1223₁₅	d1227₁₅
Base 16	a19df₁₆	a19e3₁₆