λ
Sequence Observatory

2,848,781

13 × 419 × 523
Deficient Odd Composite

Starting at 2,848,781, the Collatz iteration reaches 1 after 125 steps. The first transition is 8546344; the starting value is odd with 8 positive divisors.

Prime Factor Structure

Factorization String 13 × 419 × 523
Distinct Prime Factors 3
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 8
Divisor Sum (σ) 3,081,120
Proper Divisor Sum 232,339
Digit Sum / Digital Root 38 (Root: 2)
Adjacent Primes #2848777 ← → #2848787

Radix Representation

Decimal 2848781
Binary 1010110111100000001101 (22 bits)
Octal 0o12674015
Hexadecimal 0x2B780D

Divisor Catalog (8)

1 13 419 523 5,447 6,799 219,137 2,848,781

Collatz Trajectory (125 steps to reach 1)

Iterative sequence n → n/2 (if even) or 3n+1 (if odd):

2,848,781 8,546,344 4,273,172 2,136,586 1,068,293 3,204,880 1,602,440 801,220 400,610 200,305 600,916 300,458 150,229 450,688 225,344 112,672 56,336 28,168 14,084 7,042 3,521 10,564 5,282 2,641 7,924 3,962 1,981 5,944 2,972 1,486 743 2,230 1,115 3,346 1,673 5,020 2,510 1,255 3,766 1,883 5,650 2,825 8,476 4,238 2,119 6,358 3,179 9,538 4,769 14,308 7,154 3,577 10,732 5,366 2,683 8,050 4,025 12,076 6,038 3,019

More profiles

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