2,145,542

2 × 7 × 331 × 463

Starting at 2,145,542, the Collatz iteration reaches 1 after 73 steps. The first transition is 1072771; the starting value is even with 16 positive divisors.

Prime Factor Structure

Factorization String 2 × 7 × 331 × 463

Distinct Prime Factors 4

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 16

Divisor Sum (σ) 3,697,152

Proper Divisor Sum 1,551,610

Digit Sum / Digital Root 23 (Root: 5)

Adjacent Primes #2145529 ← → #2145547

Radix Representation

Decimal	2145542
Binary	1000001011110100000110 (22 bits)
Octal	0o10136406
Hexadecimal	0x20BD06

Divisor Catalog (16)

1 2 7 14 331 463 662 926 2,317 3,241 4,634 6,482 153,253 306,506 1,072,771 2,145,542

Collatz Trajectory (73 steps to reach 1)

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

2,145,542 1,072,771 3,218,314 1,609,157 4,827,472 2,413,736 1,206,868 603,434 301,717 905,152 452,576 226,288 113,144 56,572 28,286 14,143 42,430 21,215 63,646 31,823 95,470 47,735 143,206 71,603 214,810 107,405 322,216 161,108 80,554 40,277 120,832 60,416 30,208 15,104 7,552 3,776 1,888 944 472 236 118 59 178 89 268 134 67 202 101 304 152 76 38 19 58 29 88 44 22 11

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