Compare 81438 vs 81439

Property	81438	81439
Type	composite number	prime
Unique factors	4	1
Total factors	5	1
Prime factorization	2¹ × 3¹ × 7² × 277¹	81439¹
Prime factorization	2 × 3 × 7 × 7 × 277	81439
Divisors count	24	2
Divisors	1, 2, 3, 6, 7, 14, 21, 42, 49, 98, 147, 277, 294, 554, 831, 1662, 1939, 3878, 5817, 11634, 13573, 27146, 40719, 81438	1, 81439
Number of properties	0	5
Harmonic primes		3009th
Isolated primes		5917th
Lucky primes		1074th
Primes		7968th
Ulam primes		581st
Roman numberals
Base 2	10011111000011110₂	10011111000011111₂
Base 3	11010201020₃	11010201021₃
Base 4	103320132₄	103320133₄
Base 5	10101223₅	10101224₅
Base 6	1425010₆	1425011₆
Base 7	456300₇	456301₇
Base 8	237036₈	237037₈
Base 9	133636₉	133637₉
Base 10	81438₁₀	81439₁₀
Base 11	56205₁₁	56206₁₁
Base 12	3b166₁₂	3b167₁₂
Base 13	2b0b6₁₃	2b0b7₁₃
Base 14	21970₁₄	21971₁₄
Base 15	191e3₁₅	191e4₁₅
Base 16	13e1e₁₆	13e1f₁₆