Compare 81409 vs 81418

Property	81409	81418
Type	prime	semiprime
Unique factors	1	2
Total factors	1	2
Prime factorization	81409¹	2¹ × 40709¹
Prime factorization	81409	2 × 40709
Divisors count	2	4
Divisors	1, 81409	1, 2, 40709, 81418
Number of properties	5	1
Harmonic primes	3007th
Isolated primes	5915th
Primes	7966th
Proth primes	92nd
Pythagorean primes	3969th
Semiprimes		19229th
Roman numberals
Base 2	10011111000000001₂	10011111000001010₂
Base 3	11010200011₃	11010200111₃
Base 4	103320001₄	103320022₄
Base 5	10101114₅	10101133₅
Base 6	1424521₆	1424534₆
Base 7	456226₇	456241₇
Base 8	237001₈	237012₈
Base 9	133604₉	133614₉
Base 10	81409₁₀	81418₁₀
Base 11	56189₁₁	56197₁₁
Base 12	3b141₁₂	3b14a₁₂
Base 13	2b093₁₃	2b09c₁₃
Base 14	2194d₁₄	21958₁₄
Base 15	191c4₁₅	191cd₁₅
Base 16	13e01₁₆	13e0a₁₆