Compare 81421 vs 81428

Property	81421	81428
Type	prime	composite number
Unique factors	1	2
Total factors	1	3
Prime factorization	81421¹	2² × 20357¹
Prime factorization	81421	2 × 2 × 20357
Divisors count	2	6
Divisors	1, 81421	1, 2, 4, 20357, 40714, 81428
Number of properties	6	0
Happy primes	1236th
Harmonic primes	3008th
Isolated primes	5916th
Lucky primes	1073rd
Primes	7967th
Pythagorean primes	3970th
Roman numberals
Base 2	10011111000001101₂	10011111000010100₂
Base 3	11010200121₃	11010200212₃
Base 4	103320031₄	103320110₄
Base 5	10101141₅	10101203₅
Base 6	1424541₆	1424552₆
Base 7	456244₇	456254₇
Base 8	237015₈	237024₈
Base 9	133617₉	133625₉
Base 10	81421₁₀	81428₁₀
Base 11	5619a₁₁	561a6₁₁
Base 12	3b151₁₂	3b158₁₂
Base 13	2b0a2₁₃	2b0a9₁₃
Base 14	2195b₁₄	21964₁₄
Base 15	191d1₁₅	191d8₁₅
Base 16	13e0d₁₆	13e14₁₆