2,251,078

2 × 1125539

Starting at 2,251,078, the Collatz iteration reaches 1 after 135 steps. The first transition is 1125539; the starting value is even with 4 positive divisors.

Prime Factor Structure

Factorization String 2 × 1125539

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 4

Divisor Sum (σ) 3,376,620

Proper Divisor Sum 1,125,542

Digit Sum / Digital Root 25 (Root: 7)

Adjacent Primes #2251061 ← → #2251099

Radix Representation

Decimal	2251078
Binary	1000100101100101000110 (22 bits)
Octal	0o10454506
Hexadecimal	0x225946

Divisor Catalog (4)

1 2 1,125,539 2,251,078

Collatz Trajectory (135 steps to reach 1)

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

2,251,078 1,125,539 3,376,618 1,688,309 5,064,928 2,532,464 1,266,232 633,116 316,558 158,279 474,838 237,419 712,258 356,129 1,068,388 534,194 267,097 801,292 400,646 200,323 600,970 300,485 901,456 450,728 225,364 112,682 56,341 169,024 84,512 42,256 21,128 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

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