4,291,426

2 × 2145713

Starting at 4,291,426, the Collatz iteration reaches 1 after 123 steps. The first transition is 2145713; the starting value is even with 4 positive divisors.

Prime Factor Structure

Factorization String 2 × 2145713

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 4

Divisor Sum (σ) 6,437,142

Proper Divisor Sum 2,145,716

Digit Sum / Digital Root 28 (Root: 1)

Adjacent Primes #4291403 ← → #4291447

Radix Representation

Decimal	4291426
Binary	10000010111101101100010 (23 bits)
Octal	0o20275542
Hexadecimal	0x417B62

Divisor Catalog (4)

1 2 2,145,713 4,291,426

Collatz Trajectory (123 steps to reach 1)

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

4,291,426 2,145,713 6,437,140 3,218,570 1,609,285 4,827,856 2,413,928 1,206,964 603,482 301,741 905,224 452,612 226,306 113,153 339,460 169,730 84,865 254,596 127,298 63,649 190,948 95,474 47,737 143,212 71,606 35,803 107,410 53,705 161,116 80,558 40,279 120,838 60,419 181,258 90,629 271,888 135,944 67,972 33,986 16,993 50,980 25,490 12,745 38,236 19,118 9,559 28,678 14,339 43,018 21,509 64,528 32,264 16,132 8,066 4,033 12,100 6,050 3,025 9,076 4,538

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