λ
Sequence Observatory

1,975,144

23 × 149 × 1657
Deficient Even Composite

Starting at 1,975,144, the Collatz iteration reaches 1 after 290 steps. The first transition is 987572; the starting value is even with 16 positive divisors.

Prime Factor Structure

Factorization String 2^3 × 149 × 1657
Distinct Prime Factors 3
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 16
Divisor Sum (σ) 3,730,500
Proper Divisor Sum 1,755,356
Digit Sum / Digital Root 31 (Root: 4)
Adjacent Primes #1975133 ← → #1975147

Radix Representation

Decimal 1975144
Binary 111100010001101101000 (21 bits)
Octal 0o7421550
Hexadecimal 0x1E2368

Divisor Catalog (16)

1 2 4 8 149 298 596 1,192 1,657 3,314 6,628 13,256 246,893 493,786 987,572 1,975,144

Collatz Trajectory (290 steps to reach 1)

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

1,975,144 987,572 493,786 246,893 740,680 370,340 185,170 92,585 277,756 138,878 69,439 208,318 104,159 312,478 156,239 468,718 234,359 703,078 351,539 1,054,618 527,309 1,581,928 790,964 395,482 197,741 593,224 296,612 148,306 74,153 222,460 111,230 55,615 166,846 83,423 250,270 125,135 375,406 187,703 563,110 281,555 844,666 422,333 1,267,000 633,500 316,750 158,375 475,126 237,563 712,690 356,345 1,069,036 534,518 267,259 801,778 400,889 1,202,668 601,334 300,667 902,002 451,001

More profiles

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