λ
Sequence Observatory

4,145,122

2 × 71 × 29191
Deficient Even Composite

Starting at 4,145,122, the Collatz iteration reaches 1 after 105 steps. The first transition is 2072561; the starting value is even with 8 positive divisors.

Prime Factor Structure

Factorization String 2 × 71 × 29191
Distinct Prime Factors 3
Square Status No
Abundance Measure Deficient

Analytical Properties

Total Divisors 8
Divisor Sum (σ) 6,305,472
Proper Divisor Sum 2,160,350
Digit Sum / Digital Root 19 (Root: 1)
Adjacent Primes #4145117 ← → #4145171

Radix Representation

Decimal 4145122
Binary 1111110011111111100010 (22 bits)
Octal 0o17637742
Hexadecimal 0x3F3FE2

Divisor Catalog (8)

1 2 71 142 29,191 58,382 2,072,561 4,145,122

Collatz Trajectory (105 steps to reach 1)

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

4,145,122 2,072,561 6,217,684 3,108,842 1,554,421 4,663,264 2,331,632 1,165,816 582,908 291,454 145,727 437,182 218,591 655,774 327,887 983,662 491,831 1,475,494 737,747 2,213,242 1,106,621 3,319,864 1,659,932 829,966 414,983 1,244,950 622,475 1,867,426 933,713 2,801,140 1,400,570 700,285 2,100,856 1,050,428 525,214 262,607 787,822 393,911 1,181,734 590,867 1,772,602 886,301 2,658,904 1,329,452 664,726 332,363 997,090 498,545 1,495,636 747,818 373,909 1,121,728 560,864 280,432 140,216 70,108 35,054 17,527 52,582 26,291

More profiles

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